Match the following computer generations with their key technology.
| Generations | Key Technology |
| A. First Generation | 1. Vacuum Tubes |
| B. Second Generation | 2. Transistors |
| C. Third Generation | 3. Integrated Circuits |
| D. Fourth Generation | 4. Microprocessors |
Qusनिम्नलिखित कंप्यूटर पीढ़ियों का उनकी प्रमुख प्रौद्योगिकी से मिलान करें।
A. A-1, B-2, C-3, D-4
B. A-2, B-1, C-4, D-3
C. A-3, B-4, C-1, D-2
D. A-4, B-3, C-2, D-1