The number of bytes stored on the stack during one operation of PUSH or POP is
A. 1
B. 2
C. 3
D. 4
Answer:A
The number of bytes stored on the stack during one operation of PUSH or POP is
A. 1 B. 2 C. 3 D. 4
Explanation: As 8051 stack operations are 8-bit wide i.e. in an operation using PUSH or POP instruction, one byte of data is stored on a stack or retrieved from the stack. For implementing 16-bit operations, two 8-bit operations are cascaded.