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Balance Sheet Details (Tables) | 12 Months Ended
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Jul. 27, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Cash, Cash Equivalents, and Restricted Cash |
|  | July 27, 2019 |  | July 28, 2018
Cash and cash equivalents |  | $ | 11,750 |  |  | $ | 8,934 |
Restricted cash included in other current assets |  | 21 |  |  | 32 |
Restricted cash included in other assets |  | 1 |  |  | 27 |
Total cash, cash equivalents, and restricted cash |  | $ | 11,772 |  |  | $ | 8,993 |
Cash, Cash Equivalents, and Restricted Cash |
|  | July 27, 2019 |  | July 28, 2018
Cash and cash equivalents |  | $ | 11,750 |  |  | $ | 8,934 |
Restricted cash included in other current assets |  | 21 |  |  | 32 |
Restricted cash included in other assets |  | 1 |  |  | 27 |
Total cash, cash equivalents, and restricted cash |  | $ | 11,772 |  |  | $ | 8,993 |
Inventories |
Inventories: |  |  |  |
Raw materials |  | $ | 374 |  |  | $ | 423 |
Work in process |  | 10 |  |  | — |
Finished goods: |  |  |  |
Deferred cost of sales and distributor inventory |  | 109 |  |  | 443 |
Manufactured finished goods |  | 643 |  |  | 689 |
Total finished goods |  | 752 |  |  | 1,132 |
Service-related spares |  | 225 |  |  | 258 |
Demonstration systems |  | 22 |  |  | 33 |
Total |  | $ | 1,383 |  |  | $ | 1,846 |
Property and Equipment, Net |
Property and equipment, net: |  |  |  |
Gross property and equipment: |  |  |  |
Land, buildings, and building and leasehold improvements |  | $ | 4,545 |  |  | $ | 4,710 |
Computer equipment and related software |  | 922 |  |  | 1,085 |
Production, engineering, and other equipment |  | 5,711 |  |  | 5,734 |
Operating lease assets |  | 485 |  |  | 356 |
Furniture and fixtures |  | 376 |  |  | 358 |
Total gross property and equipment |  | 12,039 |  |  | 12,243 |
Less: accumulated depreciation and amortization |  | (9,250 | ) |  | (9,237 | )
Total |  | $ | 2,789 |  |  | $ | 3,006 |
Deferred Revenue |
Deferred revenue: |  |  |  |
Service |  | $ | 11,709 |  |  | $ | 11,431 |
Product |  | 6,758 |  |  | 8,254 |
Total |  | $ | 18,467 |  |  | $ | 19,685 |
Reported as: |  |  |  |
Current |  | $ | 10,668 |  |  | $ | 11,490 |
Noncurrent |  | 7,799 |  |  | 8,195 |
Total |  | $ | 18,467 |  |  | $ | 19,685 |

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