Discussion

Match List I with List II and select the correct answer using the codes given below :

List I	List II
(a) TCON	(i) contains status information
(b) SBUF	(ii) timer/counter control register
(c) TMOD	(iii) idle bit, power down bit
(d) PSW	(iv) serial data buffer for \(T_x\) and \(R_x\)
(e) PCON	(v) timer/counter modes of operation

Answer: A

The correct matching is a-ii, b-iv, c-v, d-i, e-iii.

TCON is the timer/counter control register, with the run and overflow flags (ii).
SBUF is the serial data buffer for transmission and reception (iv).
TMOD selects the timer/counter modes of operation (v).
PSW, the program status word, contains status information such as the carry, auxiliary carry, overflow and parity flags (i).
PCON, the power control register, contains the idle and power-down bits (iii).

The other codes confuse TCON with TMOD or give PSW the power control bits.

No comment is present. Be the first to comment.

Loading…