Microprocessor and Microcontroller Multiple Choice Questions and Answers

81. In 8086 microprocessor one of the following statements is not true?

1. coprocessor is interfaced in max mode.
2. coprocessor is interfaced in min mode.
3. I /O can be interfaced in max / min mode.
4. supports pipelining

82. Address line for TRAP is?

1. 0023H
2. 0024H
3. 0033H
4. 0099H

83. Access time is faster for _________.

1. ROM
2. SRAM
3. DRAM
4. ERAM

84. The First Microprocessor was__________.

1. Intel 4004
2. 8080
3. 8085
4. 4008

85. Status register is also called as ___________.

1. accumulator
2. stack
3. counter
4. flags

86. Which of the following is not a basic element within the microprocessor?

1. Microcontroller
2. Arithmetic logic unit (ALU)
3. Register array
4. Control unit

87. Which method bypasses the CPU for certain types of data transfer?

1. Software interrupts
2. Interrupt-driven I/O
3. Polled I/O
4. Direct memory access (DMA)

88. Which bus is bidirectional?

1. Address bus
2. Control bus
3. Data bus
4. None of the above

89. The first microprocessor had a(n)________.

1. 1 – bit data bus
2. 2 – bit data bus
3. 4 – bit data bus
4. 8 – bit data bus

90. Which microprocessor has multiplexed data and address lines?

1. 8086
2. 80286
3. 80386
4. Pentium