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  <xsd:element name="StockIssuedDuringPeriodSharesStockOptionsExercisedEmployeeStockPurchasePlanAndStockAward" id="mosy_StockIssuedDuringPeriodSharesStockOptionsExercisedEmployeeStockPurchasePlanAndStockAward" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConsolidatedBalanceSheetsAndStatementsOfOperationsComponentsDisclosureAbstract" id="mosy_ConsolidatedBalanceSheetsAndStatementsOfOperationsComponentsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SegmentReportingAndConcentrationRiskDisclosureAbstract" id="mosy_SegmentReportingAndConcentrationRiskDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SegmentReportingAndConcentrationRiskDisclosureTextBlock" id="mosy_SegmentReportingAndConcentrationRiskDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SaleOfLicenseForIntellectualPropertyMember" id="mosy_SaleOfLicenseForIntellectualPropertyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcquisitionsAndDisposalsNumberOfEmployeesOfEntityIndiaSubsidiaryAcceptedEmploymentInPurchasingCompany" id="mosy_AcquisitionsAndDisposalsNumberOfEmployeesOfEntityIndiaSubsidiaryAcceptedEmploymentInPurchasingCompany" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="SignificantAcquisitionsAndDisposalsAmountOfHoldBack" id="mosy_SignificantAcquisitionsAndDisposalsAmountOfHoldBack" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SignificantAcquisitionsAndDisposalsOverWhichPortionOfHoldbackIsReserved" id="mosy_SignificantAcquisitionsAndDisposalsOverWhichPortionOfHoldbackIsReserved" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SignificantAcquisitionsAndDisposalsByTransactionsAxis" id="mosy_SignificantAcquisitionsAndDisposalsByTransactionsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainsRollingMaturityAbstract" id="mosy_AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainsRollingMaturityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationOptionAndIncentivePlansNonemployeePolicyTextBlock" id="mosy_ShareBasedCompensationOptionAndIncentivePlansNonemployeePolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MemoryTechnologyPatentsMember" id="mosy_MemoryTechnologyPatentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfFiniteLivedIntangibleAssetsSold" id="mosy_NumberOfFiniteLivedIntangibleAssetsSold" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WeightedAverageNumberOfSharesOutstandingBeforeAdjustmentsBasic" id="mosy_WeightedAverageNumberOfSharesOutstandingBeforeAdjustmentsBasic" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AvailableForSaleSecuritiesDebtMaturitiesAfterOneWithinTwoYearsGrossUnrealizedLosses" id="mosy_AvailableForSaleSecuritiesDebtMaturitiesAfterOneWithinTwoYearsGrossUnrealizedLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AvailableForSaleSecuritiesDebtMaturitiesAfterOneWithinTwoYearsFairValue" id="mosy_AvailableForSaleSecuritiesDebtMaturitiesAfterOneWithinTwoYearsFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="AvailableForSaleSecuritiesDebtMaturitiesAfterOneWithinTwoYearsAmortizedCost" id="mosy_AvailableForSaleSecuritiesDebtMaturitiesAfterOneWithinTwoYearsAmortizedCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ContingentConsiderationMember" id="mosy_ContingentConsiderationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MagnaLynxIncMember" id="mosy_MagnaLynxIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessAcquisitionCostOfAcquiredEntityHoldbacksPayablePeriodAfterClosing" id="mosy_BusinessAcquisitionCostOfAcquiredEntityHoldbacksPayablePeriodAfterClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessAcquisitionCostOfAcquiredEntityEarnOutConsiderationPayablePeriodAfterClosing" id="mosy_BusinessAcquisitionCostOfAcquiredEntityEarnOutConsiderationPayablePeriodAfterClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessAcquisitionEarnOutPaymentToShareholdersOfAcquiredEntityIncludedInPurchasePriceAmount" id="mosy_BusinessAcquisitionEarnOutPaymentToShareholdersOfAcquiredEntityIncludedInPurchasePriceAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BusinessAcquisitionCostOfAcquiredEntityHoldbacks" id="mosy_BusinessAcquisitionCostOfAcquiredEntityHoldbacks" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BusinessAcquisitionCostOfAcquiredEntityCashPaidToSettleDebtAndOtherLiabilities" id="mosy_BusinessAcquisitionCostOfAcquiredEntityCashPaidToSettleDebtAndOtherLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BusinessAcquisitionCostOfAcquiredEntityCashPaidToShareholders" id="mosy_BusinessAcquisitionCostOfAcquiredEntityCashPaidToShareholders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="SaleOfPatentsMember" id="mosy_SaleOfPatentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DomesticMemoryTechnologyPatentsMember" id="mosy_DomesticMemoryTechnologyPatentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignMemoryTechnologyPatentsMember" id="mosy_ForeignMemoryTechnologyPatentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DeferredTaxAssetsTaxCreditCarryforwardsForeignAndOther" id="mosy_DeferredTaxAssetsTaxCreditCarryforwardsForeignAndOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="DeferredTaxLiabilitiesAcquiredIntangibleAssetsAndOther" id="mosy_DeferredTaxLiabilitiesAcquiredIntangibleAssetsAndOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ValuationAllowanceDeferredTaxAssetRelatedToStockOptionDeductionsIncurredInPriorPeriod" id="mosy_ValuationAllowanceDeferredTaxAssetRelatedToStockOptionDeductionsIncurredInPriorPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="TaxCreditCarryforwardAmountWithoutExpiration" id="mosy_TaxCreditCarryforwardAmountWithoutExpiration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="TaxCreditCarryforwardForeignSubjectToExpiration" id="mosy_TaxCreditCarryforwardForeignSubjectToExpiration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="IncomeTaxReconciliationFederalAlternativeMinimumTax" id="mosy_IncomeTaxReconciliationFederalAlternativeMinimumTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ShareholdersRightsPlanAbstract" id="mosy_ShareholdersRightsPlanAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PreferredStockDividendsNumberOfPreferredSharePurchaseRightsDistributedForEachShareOfCommonStockOutstanding" id="mosy_PreferredStockDividendsNumberOfPreferredSharePurchaseRightsDistributedForEachShareOfCommonStockOutstanding" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PreferredSharePurchaseRightsSharesPerRight" id="mosy_PreferredSharePurchaseRightsSharesPerRight" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PreferredSharePurchaseRightsPercentageOwnershipOfOutstandingCommonStockForExercise" id="mosy_PreferredSharePurchaseRightsPercentageOwnershipOfOutstandingCommonStockForExercise" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PreferredSharePurchaseRightsMinimumPercentageOwnershipOfferToPurchaseCommonStock" id="mosy_PreferredSharePurchaseRightsMinimumPercentageOwnershipOfferToPurchaseCommonStock" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommonStockBeneficialOwnershipThresholdForHolderOfGrandfatheredStockPercentage" id="mosy_CommonStockBeneficialOwnershipThresholdForHolderOfGrandfatheredStockPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareRepurchaseProgramAbstract" id="mosy_ShareRepurchaseProgramAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedContributionPlanRequiredAgeOfEmployeesToBeEligibleForParticipationInPlan" id="mosy_DefinedContributionPlanRequiredAgeOfEmployeesToBeEligibleForParticipationInPlan" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedContributionPlanMaximumContributionsByPlanParticipantsPercentage" id="mosy_DefinedContributionPlanMaximumContributionsByPlanParticipantsPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SegmentGeographicalGroupsOfCountriesGroupThreeMember" id="mosy_SegmentGeographicalGroupsOfCountriesGroupThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="Amended2000PlanMember" id="mosy_Amended2000PlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityIncentivePlan2010Member" id="mosy_EquityIncentivePlan2010Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTermOfPlan" id="mosy_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermOfPlan" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledBeforePlanTermination" id="mosy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledBeforePlanTermination" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledAndExpiredAfterPlanTermination" id="mosy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledAndExpiredAfterPlanTermination" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledBeforePlanTerminationWeightedAverageExercisePrice" id="mosy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledBeforePlanTerminationWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledAndExpiredAfterPlanTerminationWeightedAverageExercisePrice" id="mosy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledAndExpiredAfterPlanTerminationWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MissionWestPropertiesIncMember" id="mosy_MissionWestPropertiesIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TrustOwnedByImmediateFamilyMemberOfManagementOrPrincipalOwnerMember" id="mosy_TrustOwnedByImmediateFamilyMemberOfManagementOrPrincipalOwnerMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OccupiedLeasedFacilityArea" id="mosy_OccupiedLeasedFacilityArea" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="TermOfLeaseAgreement" id="mosy_TermOfLeaseAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfLeaseTermsToExtend" id="mosy_NumberOfLeaseTermsToExtend" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OptionalTermOfLeaseAgreement" id="mosy_OptionalTermOfLeaseAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfFairMarketMonthlyRentRateAtWhichLeaseTermsToBeExtended" id="mosy_PercentageOfFairMarketMonthlyRentRateAtWhichLeaseTermsToBeExtended" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PeriodAfterWhichEntityMayTerminateLeaseIfSignedLeaseToMoveIntoFacilityMinimum" id="mosy_PeriodAfterWhichEntityMayTerminateLeaseIfSignedLeaseToMoveIntoFacilityMinimum" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExcessOccupiedLeasedFacilityAreaAsPercentageOfPreviousLeasedFacility" id="mosy_ExcessOccupiedLeasedFacilityAreaAsPercentageOfPreviousLeasedFacility" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PeriodForTerminationOfLeaseIfEntitySoldSubstantiallyAllOfAssetsOrLessorCannotAccommodateFutureExpansionRequirements" id="mosy_PeriodForTerminationOfLeaseIfEntitySoldSubstantiallyAllOfAssetsOrLessorCannotAccommodateFutureExpansionRequirements" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionPaymentToRelatedParty" id="mosy_RelatedPartyTransactionPaymentToRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="RangeOfExercisePricesFromDollars1.50ToDollars3.23Member" id="mosy_RangeOfExercisePricesFromDollars1.50ToDollars3.23Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RangeOfExercisePricesFromDollars3.24ToDollars4.35Member" id="mosy_RangeOfExercisePricesFromDollars3.24ToDollars4.35Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RangeOfExercisePricesFromDollars4.36ToDollars5.61Member" id="mosy_RangeOfExercisePricesFromDollars4.36ToDollars5.61Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RangeOfExercisePricesFromDollars5.62ToDollars10.00Member" id="mosy_RangeOfExercisePricesFromDollars5.62ToDollars10.00Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfRevenueFromExternalCustomersByGeographicAreaTextBlock" id="mosy_ScheduleOfRevenueFromExternalCustomersByGeographicAreaTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfEntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualCountriesTextBlock" id="mosy_ScheduleOfEntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualCountriesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcquisitionsAndDisposalsAcquisitionProceedsReceivedUponExecutionOfAgreement" id="mosy_AcquisitionsAndDisposalsAcquisitionProceedsReceivedUponExecutionOfAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AssetPurchaseAgreementDisclosureAbstract" id="mosy_AssetPurchaseAgreementDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AssetPurchaseAgreementDisclosureTextBlock" id="mosy_AssetPurchaseAgreementDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NewAccountingPronouncementOrChangeInAccountingPrincipleRetrospectiveApplicationResultingInIncreaseDecreaseInTaxCreditCarryforwards" id="mosy_NewAccountingPronouncementOrChangeInAccountingPrincipleRetrospectiveApplicationResultingInIncreaseDecreaseInTaxCreditCarryforwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="CommonStockBeneficialOwnershipThresholdForHolderOfGrandfatheredStockPercentageAfterAmendment" id="mosy_CommonStockBeneficialOwnershipThresholdForHolderOfGrandfatheredStockPercentageAfterAmendment" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PeriodOverWhichCompanyExpectsUnrecognizedTaxBenefitsToNotChangeSignificantly" id="mosy_PeriodOverWhichCompanyExpectsUnrecognizedTaxBenefitsToNotChangeSignificantly" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PatentsRecordedInConnectionWithPatentSaleValuation" id="mosy_PatentsRecordedInConnectionWithPatentSaleValuation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ThresholdPurchaseReturnPercentageByDistributorsForSpecifiedPeriod" id="mosy_ThresholdPurchaseReturnPercentageByDistributorsForSpecifiedPeriod" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SpecifiedPeriodForThresholdPurchaseReturnPercentageByDistributors" id="mosy_SpecifiedPeriodForThresholdPurchaseReturnPercentageByDistributors" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfSharesIssuedToMoSysChiefExecutiveOfficer" id="mosy_NumberOfSharesIssuedToMoSysChiefExecutiveOfficer" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsCost" id="mosy_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="RangeOfExercisePricesFromDollars3.24ToDollars4.25Member" id="mosy_RangeOfExercisePricesFromDollars3.24ToDollars4.25Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="UnitedStatesAndCanadaMember" id="mosy_UnitedStatesAndCanadaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TwoCustomersMember" id="mosy_TwoCustomersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RangeOfExercisePricesFromDollars5.62ToDollars9.00Member" id="mosy_RangeOfExercisePricesFromDollars5.62ToDollars9.00Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NorthAmericaMember" id="mosy_NorthAmericaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionAmountOfLoanGivenByExecutiveOfficersToRelatedParty" id="mosy_RelatedPartyTransactionAmountOfLoanGivenByExecutiveOfficersToRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>
