MCS-51 instruction set

Q.  How many single byte, two-byte and three-byte instructions are supported by MCS-51 from the overall instruction set?
- Published on 09 Nov 15

a. 55 - single byte, 35 two-byte & 21 three-byte instructions
b. 50 - single byte, 30 two-byte & 31 three-byte instructions
c. 42 - single byte, 45 two-byte & 24 three-byte instructions
d. 45 - single byte, 45 two-byte & 17 three-byte instructions

ANSWER: 45 - single byte, 45 two-byte & 17 three-byte instructions

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