Digital Electronics-Microprocessor Fundamentals
Digital Electronics-Microprocessor Fundamentals
21. A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the:
- stack pointer
- program counter
- instruction pointer
- accumulator
22. What is the difference between a mnemonic code and machine code?
- There is no difference.
- Machine codes are in binary, mnemonic codes are in shorthand English.
- Machine codes are in shorthand English, mnemonic codes are in binary.
23. Which bus is a bidirectional bus?
- address bus
- data bus
- address bus and data bus
- none of the above
24. Which of the following buses is primarily used to carry signals that direct other ICs to find out what type of operation is being performed?
- data bus
- control bus
- address bus
- address decoder bus
25. What kind of computer program is used to convert mnemonic code to machine code?
- debug
- assembler
- C++
- Fortran
26. Which of the following are the three basic sections of a microprocessor unit?
- operand, register, and arithmetic/logic unit (ALU)
- control and timing, register, and arithmetic/logic unit (ALU)
- control and timing, register, and memory
- arithmetic/logic unit (ALU), memory, and input/output
27. The stack is a data storage area in RAM used by certain microprocessor operations.
- TRUE
- FALSE
28. A microprocessor with the necessary support circuits will include at least two memory ICs: ROM or EPROM, and a RAM.
- TRUE
- FALSE
29. I/O-mapped systems identify their input and output devices by giving them an 8-bit port number.
- TRUE
- FALSE