HSC Science (Computer Science) 12th Board Exam - Maharashtra State Board Question Bank Solutions for Computer Science 2

.............is a Micro-controller.
(i) 8086
(ii) 8051
(iii) 8088
(iv) 80286

..............instruction does not affect the Flag.
(i) RAR
(ii) CMP C
(iii) XRA
(iv) MOV A,B

If length of cable is very long then ................ is used in between to bring the weakend signal to its original level.
(i) MODEM
(ii) HUB
(iii) REPEATER
(iv) ROUTER

.....................instruction is used for 16-bit addition.
(i) ADD
(ii) ADI
(iii) ADC
(iv) DAD

Differentiate between Micro-controller and a Micro-processor

Explain Accumulator.

Explain Program counter.

Explain Stack pointer (SP).

Write a short note on MODEM.

______Instruction would not affect Zero Flag.

(i) XRA A

(ii) SUB A

(iii) CMPA

(iv) MVI A, 00H

Explain the function of following pins of 8085
(i) HLDA
(ii) SID
(iii) READY

Discuss in brief the members of X-86 Family begining from 80386 and upwards.

Draw the memory register map of Micro-controller 8051.

Data bus of 80286 MPU is of size_____

(i) 8 bit

(ii) 16 bit

(iii) 32 bit

(iv) 64 bit

Draw the labelled internal block diagram of 8085 Microprocessor

_____is used to store 8 bit opcode in 8085.

(i) IR

(ii) PC

(iii) SP

(iv) Accumulator

The device used to extend cable length of a network is______.

(i) MODEM

(ii) REPEATER

(iii) HUB

(iv) ROUTER

Draw block diagram of Generic Microprocessor.

Explain in brief programming model of X-86 Family.

State any six features of 8051 Microcontroller.