1. 8086 microprocessor uses ……….. memory interface.
(A) 32 bit
(B) 8 bit
(C) 16 bit
(D) 64 bit
2. A0 signal is used to enable …………. bank of memory in 8086 interface.
(A) None of these
(B) Higher
(C) Both
(D) Lower
3. The number of horizontal and vertical pixels on a display screen is called
(A) Accuracy
(B) Resolution
(C) Precision
(D) None of these
4. In 8086 microprocessor, the high bank of memory is enabled by signal.
(A) A0
(B) RD̅̅̅̅
(C) HOLD
(D) BHE̅̅̅̅̅̅
5. Number of function keys in a computer keyboard
(A) 10
(B) 14
(C) 12
(D) 16
6. A DRAM needs special external circuits to retain data;
(A) Refreshing
(B) Storing
(C) Decoding
(D) Addressing
7. Simultaneous converter is a type of converter;
(A) Serial to Parallel
(B) Analog to Digital
(C) Parallel to Serial
(D) Digital to Analog
8. An 8 bit DAC can generate ………. different levels.
(A) 128
(B) 512
(C) 256
(D) 1024
9. A 64 K bit memory can be organized as
(A) 64K × 1
(B) 8K × 8
(C) All of these
(D) 16K × 4
10. The data in ………. memory can be erased electrically.
(A) CD
(B) Floppy
(C) Flash
(D) Hard Disk
11. 8251 is an IC of;
(A) UART
(B) USART
(C) ADC
(D) DAC
12. 32-bit memory interface is used for;
(A) 80486
(B) 80188
(C) 80286
(D) 80186