SMU and Maharaja Ganga Singh University Helpline

Microprocessor Q1. A microprocessor is the heart of the microcomputer. a) Receiving input b) Performing computations. c) Storing data & instructions d) All of the above. Q2. A device, which enables a microcomputer to perform the first of the above mentioned tasks is known as the input device. a) Keyboard b) Mouse c) Toggle d) All of the above. Q3.The task of displaying the result computed by the microprocessor is performed by an output device, some of the commonly used output device. a) Cathode Ray Tube(CRT) b) Light-Emitting diodes(LED’S) c) Laser printer d) All of the above. Q4.An instruction essentially consists of an a) Operation code b) Address of the data c) Instruction operates d) None of the above. Q5. The SO85A has interrupt pins :- a) TRAP, RST7.5 b) RST6.5, RST5.5 c) TNTR(pin 10) d) All of the above. Q6. 8085A has 8 unidirectional signal lines :- a)MSB b) HOLB,HALT c) RESET mode d) None of the above. Q7. The clock(CLK) signal is derived ...

Micro Processor BCA-3 1. Two's complement representation of -2 is__ a) 110 b)0110 c)1110 d)none of these 2. the binary representation of decimal number 0.375 is___ a) 1110 b)01110 c)0.011 d)1.001 3.8085 model includes ___-register a) one b)two c)six d)seven 4.8085 has ____ general purpose register to store ___ bit data a) one ,3 b)two ,4 c) six,8 d)none of these 5. this 16 bit register deals with sequencing the execution of instructions_ a)ac b)dc c)pc d)none of these 6. the beginning of the stack is defined by loading 16 bit address in the ____ a)pc b)ac c)sp d)none of these 7.the size of 8085 address bus is ____ bit a) two b)three c )16 d)8 8.state TRUE/False ; trap is an un makeable interrupt. a) FALSE b) TRUE c)NO comment d)Both a & b 9. these two pins provide connection for an external frequency_____ a)A,B b) A,C c)x1,x2 d)none of these 10_________ flag is set to 1 by the instruction just en...