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Exercise

"To err is human; to forgive, divine."
- Alexander Pope
1. 

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

2. 

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.

3. 

Which bus is bidirectional?

A. data bus
B. control bus
C. address bus
D. multiplexed bus

4. 

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

A. assembly language programs
B. firmware
C. BASIC interpreter instructions
D. flowchart instructions

5. 

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

A. CPUB. compiler
C. microcomputerD. ALU




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