Instruction Timing Diagram of 8085 Microprocessor – Exercise – 1

1. An instruction cycle is made up of :

(a) One or more execute cycles
(b) One or more fetch cycles
(c) One opcode and one fetch cycle
(d) None of the above

Answer
Answer : (c)
Explanation
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2. The no. of minimum clock cycle in a m/c cycle for 8085 are :

(a) 1
(b) 2
(c) 3
(d) 5

Answer
Answer : (a)
Explanation
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3. In a 8 bit mp, the fetch cycle required to fetch a 8 bit instruction will be :

(a) 1
(b) 2
(c) 3
(d) Depends on the computer design

Answer
Answer : (b)
Explanation
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4. Which of the following cycles are required to fetch and execute information :

(a) Clock cycles
(b) T cycles
(c) Instruction cycle
(d) Memory cycle

Answer
Answer : (c)
Explanation
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5. Normally a MP cycles b/w :

(a) Fetch and halt states
(b) Fetch and interrupt states
(c) Fetch and execute states
(d) Halt and execute states

Answer
Answer : (b)
Explanation
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