Discussion
Identify the peripheral devices for their applications.
| (a) 8155 | (i) Serial Communication |
| (b) 8279 | (ii) Timers and Counters |
| (c) 8253 | (iii) Keyboard and display interface |
| (d) 8251 | (iv) Additional input/output lines to processor |
Codes :
(a) (b) (c) (d)
Answer: D
The correct match is a-iv, b-iii, c-ii, d-i, the fourth option. The 8155 gives additional input and output lines, along with RAM and a timer, the 8279 is the keyboard and display interface, the 8253 is the programmable interval timer or counter, and the 8251 is the serial communication interface.
The other options give the keyboard interface to the 8155 or the serial interface to the 8253, which is not so.
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