Running 2 Youtube Channel : The Masti Adda (Fun based ) : The Knowledge Adda (Knowledge based) : Subscribe for Knowledge with Fun....
Written by @
Micro-Controller Lab Test Paper-A

Q1. Choose correct option in following questions.
(i)A general purpose microprocessor normally needs which of the following devices to attach on it?
(a) RAM              (b) ROM             (c) I/O Devices              (d) All of the above

(ii)How many I/O pins are in 8051 micro-controller?
(a)  32               (b) 16                (c) 8                             (d) 4

(iii) Which instruction causes error in micro-controller?
(a) MOV A,05 H  (b) MOV A,#05H  (c) MOV A,#F5 H          (d) None

(iv) Which is correct regarding DPTR?
(a)Data Pointer, 16 bit (b) Data Pointer, 8 bit (c) Data Register, 16 bit (d) Data Register, 8 bit

(v) What is the result of following code and where is it kept?
MOV A, #10 H, MOV R2, #05 H, ADD A, R2
(a) A, 0F H                 (b) R2, 0FH (c) A, 15 H                 (d) R2, 15 H

(vi) This program code will be executed continuously?
     You: MOV A, #02 H
             JNZ You
(a) True                     (b) False      (c) Can not Say            (d) Wrong Code

(vii) The 8-bit address bus allows access to an address range of:
(a) 0000 to FFFFH      (b) 000 to FFFH   (c) 00 to FFH         (d) 0 to FH

(viii) Which of the following instructions will move the contents of register 3 to the accumulator?
(a) MOV 3R, A           (b) MOV R3, A  (c) MOV A, R3          (d) MOV A, 3R 

(ix) The Program Counter of 8051 is …………..bits wide.     
(a) 8                      (b) 16                (c) 32                      (d)  4  

(x) The Micro-controller 8051 has
(a) 128 bytes of RAM    (b)  ) 64 bytes of RAM    (c) 4 K bytes of RAM    (d)  None   

Download....Test Paper- A

No comments:

Post a Comment