Bihar SBTE Polytechnic Diploma Computer Science & Engineering 4 Sem May 2019 DEM Paper
| Sr. No. | Questions with options |
| 1 | Which of the following is minimum error code?
(a) Octal code (b) Gray code (c) Binary code (d) Excess-3 code |
| 2 | A NOT gate has
(a) Two input and one output (b) One input and one output (c) One input and two outputs (d) None of these |
| 3 | A set of instructions written in computer language is called the
(a) Software (b) Hardware (c) Program (d) None of these |
| 4 | 1’s complement of 10101 is given by
(a) 01010 (b) 01011 (c) 10101 (d) 00100 |
| 5 | The shift register is designed to shift data
(a) Only to left changing the order of the bits (b) Only to right changing the order of the bits (c) Either left or right changing the order of the bits (d) Either left or right with out changing the order of the bits |
| 6 | The 8085 instruction RAL performs the following operations
(a) Rotate the content of accumulator to the right (b) Rotate the content of accumulator to the left (c) Rotate the content of accumulator to right through carry (d) Rotate the content the accumulator to left through carry |
| 7 | Disc and drum are the
(a) Hardware part of the computer (b) Software part (c) Firmware (d) None of these |
| 8 | Which of the following memories normally has highest storage capacity?
(a) Magnetic disk (b) Magnetic tape (c) Semi conductor memory (d) Core memory |
| 9 | OP-AMPs can be used to amplify –
(a) D.C input signal only (b) A.C input signal only (c) D.C as well as input signal (d) None of these |
| 10 | Number of interrupts of intel 8085 are
(a) 5 (b) 3 (c) 4 (d) 2 |
| 11 | A program written in mnemonics is called
(a) High level language program (b) Low level language program (c) Assembly language program (d) None of these |
| 12 | One of the methods used for A/D conversion is
(a) R-2R ladder (b) Weighted binary resistors (c) Successive approximation (d) None of these |
| 13 | In a micro computer ____ is its heart.
(a) Microprocessor (b) ALU (c) Control unit (d) None of these |
| 14 | An R-S flip flop cannot be used to design T-type flip flop as
(a) R=0, S=1 is not permitted (b) R=0, S-0 is not permitted (c) R=1, S-0 is not permitted (d) R=S=1 is not permitted |
| 15 | Flip flop comes in the category of
(a) 2-bit storage device (b) 1-bit storage device (c) Multi bit storage device (d) None of these |
| 16 | Extremely low power dissipation and low cost can be achieved in
(a) MOS ICs (b) CMOS ICs (c) TTL ICs (d) ECL ICs |
| 17 | The 8085 instruction INR r comes in the category of
(a) Machine control group (b) Branch group (c) Arithmetic group (d) Data transfer group |
| 18 | An ideal OP-AMP has
(a) Infinite Av (b) Infinite Ri (c) Zero Ro (d) All of the above |
| Data Collected By – K. Jeyanthi | |
| Published On – 21st April 2022 | |
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