Digital Electronics-Microprocessor Fundamentals
Digital Electronics-Microprocessor Fundamentals
1. The devices that provide the means for a computer to communicate with the user or other computers are referred to as:
- CPU
- ALU
- I/O
- none of the above
2. The software used to drive microprocessor-based systems is called:
- assembly language
- firmware
- machine language code
- BASIC interpreter instructions
3. The circuits in the 8085A that provide the arithmetic and logic functions are called the:
- CPU
- ALU
- I/O
- none of the above
5. The ________ ensures that only one IC is active at a time to avoid a bus conflict caused by two ICs writing different data to the same bus.
- control bus
- control instructions
- address decoder
- CPU
7. The items that you can physically touch in a computer system are called:
- software
- firmware
- hardware
- none of the above
8. Single-bit indicators that may be set or cleared to show the results of logical or arithmetic operations are the:
- flags
- registers
- monitors
- decisions
9. When referring to instruction words, a mnemonic is:
- a short abbreviation for the operand address
- a short abbreviation for the operation to be performed
- a short abbreviation for the data word stored at the operand address
- shorthand for machine language
10. The technique of assigning a memory address to each I/O device in the computer system is called:
- memory-mapped I/O
- ported I/O
- dedicated I/O
- wired I/O