Computer Hardware and Software

Q1: What is the difference between mnemonic codes and machine codes?

A There is no difference.

B Machine codes are in binary, mnemonic codes are in shorthand English.

C Machine codes are in shorthand English, mnemonic codes are in binary.

D Machine codes are in shorthand English, mnemonic codes are a high-level language.

Q2: The software used to drive microprocessor-based systems is called:

A assembly language programs

B firmware

C BASIC interpreter instructions

D flowchart instructions

Q3: How many buses are connected as part of the 8085 microprocessor?

A 2

B 3

C 5

D 8

Q4: When referring to instruction words, a mnemonic is:

A a short abbreviation for the operand address

B a short abbreviation for the operation to be performed

C a short abbreviation for the data word stored at the operand address

D shorthand for machine language

Q5: Which bus is bidirectional?

A data bus

B control bus

C address bus

D multiplexed bus

Q6: The technique of assigning a memory address to each I/O device in the SAM system is called:

A wired I/O

B I/O mapping

C dedicated I/O

D memory-mapped I/O

Q7: Which of the following is not a computer bus?

A data bus

B timer bus

C control bus

D address bus

Q8: A microprocessor unit, a memory unit, and an input/output unit form a:


B compiler

C microcomputer


Q9: How many bits are used in the data bus?

A 7

B 8

C 9

D 16

Q10: Exceptions to the 8085 microprocessor normal operation are called:

A jump instructions

B decoding

C interrupts

D jump instructions or interrupts

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