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ECE · Q69

Microprocessors And Microcontrollers

Engineering and GATE · ECE · question 69

Q69

In 8051 family instructions, which one of the following option is true?

A.
An opcode is one byte long for each instruction
Answer
B.
An opcode has variable number of bits in instruction
C.
An opcode must have operands specified in each instruction
D.
An opcode cannot coexist with the PC bits

Answer: Option A

Solution

Answer: Option A
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