680. A dot-matrix printer
A. is an input device
B. is an output device
C. cannot print alphabet
D. has a speed of 1000 cps
✅ The correct answer is option B.
683. The computers that we use are digital whereas we live in an analog world which means that we have to translate analog data into digital data. What is the name of the circuit which helps us in this conversion?
A. D/A converter
B. A/D converter
C. Voice recognition
D. Adapter
✅ The correct answer is option B.
685. A wireless technology built in electronic gadgets used for exchanging data over short distances is ______
A. USB
B. Bluetooth
C. Modem
D. Wifi
✅ The correct answer is option B.
687. Can you tell what passes into and out from the computer via its ports?
A. Data
B. Bytes
C. Graphics
D. Pictures
✅ The correct answer is option B.
689. An electronic circuit with about 20 transistors fabricated on a silicon chip is known as
A. SSI
B. MSI
C. DPS
D. RJE
✅ The correct answer is option A.
691. What do you need for an ink jet printer?
A. A drum
B. A cartridge
C. A ribbon
D. All of the above
✅ The correct answer is option B.
693. The CPU is made up of control unit ALU and
A. Memory
B. Input-Output
C. Register unit
D. All of the above
✅ The correct answer is option A.
695. An adder in which the bits of the operands are added one after another is
A. Half-adder
B. Full-adder
C. Serial adder
D. All of the above
✅ The correct answer is option C.
697. The equipment with which the computer talks to its users is called a
A. word processor
B. peripheral
C. software
D. diskette
✅ The correct answer is option B.
700. Conversion of an octal number 1428 to binary number is
A. 11000102
B. 1101102
C. 11000112
D. 11011012
✅ The correct answer is option A.