Q451. Which computer component acts as the brain of the computer?
A) ALU
B) Control Unit
C) CPU
D) Register
Answer: C

Q452. Which type of memory is faster than SSD but slower than CPU cache?
A) RAM
B) ROM
C) Flash Memory
D) Hard Disk
Answer: A

Q453. Which input device can read QR codes?
A) Barcode Reader
B) QR Scanner
C) OCR
D) OMR
Answer: B

Q454. Which generation of computers first used artificial neural networks?
A) Third
B) Fourth
C) Fifth
D) Sixth
Answer: C

Q455. Which device is used to input a signature electronically?
A) Keyboard
B) Graphics Tablet
C) Scanner
D) Mouse
Answer: B

Q456. Which memory stores instructions for immediate access by CPU?
A) ROM
B) Cache
C) Hard Disk
D) USB Drive
Answer: B

Q457. Which device reads optical marks and stores the results digitally?
A) OCR
B) OMR
C) MICR
D) Barcode Reader
Answer: B

Q458. Which type of memory is called scratchpad memory?
A) Cache
B) ROM
C) Hard Disk
D) Flash
Answer: A

Q459. Which CPU register holds the currently executing instruction?
A) PC (Program Counter)
B) IR (Instruction Register)
C) MAR (Memory Address Register)
D) MBR (Memory Buffer Register)
Answer: B

Q460. Which input device captures movements of a pointer on the screen?
A) Joystick
B) Mouse
C) Keyboard
D) Touch Screen
Answer: B

Q461. Which output device produces hard copies of graphical data?
A) Monitor
B) Printer
C) Plotter
D) Projector
Answer: C

Q462. Which storage device can be removed and used to transfer data between computers?
A) RAM
B) USB Drive
C) Cache
D) ROM
Answer: B

Q463. Which memory type is used in Solid State Drives (SSDs)?
A) SRAM
B) DRAM
C) Flash Memory
D) ROM
Answer: C

Q464. Which generation of computers used integrated circuits (ICs)?
A) First
B) Second
C) Third
D) Fourth
Answer: C

Q465. Which device converts analog audio signals into digital format?
A) Microphone with ADC
B) Speaker
C) DAC
D) Modem
Answer: A

Q466. Which type of memory is permanently written during manufacture?
A) RAM
B) ROM
C) Cache
D) Flash
Answer: B

Q467. Which logic gate outputs 0 when all inputs are 1?
A) AND
B) NAND
C) OR
D) NOR
Answer: B

Q468. Which device reads magnetic stripes on cards?
A) OCR
B) MICR
C) Magnetic Card Reader
D) Barcode Reader
Answer: C

Q469. Which CPU component is responsible for controlling the sequence of operations?
A) ALU
B) Control Unit
C) Cache
D) Register
Answer: B

Q470. Which type of computer is designed to handle multiple users simultaneously?
A) Microcomputer
B) Mainframe
C) Supercomputer
D) Laptop
Answer: B

Q471. Which memory is fastest but very small in size?
A) Cache
B) RAM
C) Hard Disk
D) ROM
Answer: A

Q472. Which input device converts hand-drawn sketches into digital format?
A) Graphics Tablet
B) Scanner
C) Keyboard
D) Mouse
Answer: A

Q473. Which device projects computer images onto a screen for presentations?
A) Plotter
B) Projector
C) Monitor
D) Printer
Answer: B

Q474. Which type of printer uses toner powder to print?
A) Dot Matrix
B) Laser Printer
C) Inkjet Printer
D) Daisy Wheel
Answer: B

Q475. Which generation of computers is characterized by microprocessor usage?
A) Third
B) Fourth
C) Fifth
D) Sixth
Answer: B

Q476. Which input device reads hand-written text for computer processing?
A) OCR
B) OMR
C) MICR
D) Barcode Reader
Answer: A

Q477. Which memory stores BIOS instructions permanently?
A) RAM
B) ROM
C) Cache
D) Register
Answer: B

Q478. Which device converts digital data into sound output?
A) Microphone
B) DAC
C) Speaker
D) ADC
Answer: C

Q479. Which type of computer memory is non-volatile but can be electronically erased?
A) EEPROM
B) RAM
C) Cache
D) Register
Answer: A

Q480. Which input device can detect physical movements like gestures?
A) Joystick
B) Motion Sensor
C) Keyboard
D) Scanner
Answer: B

Q481. Which logic gate outputs 1 only when all inputs are 0?
A) AND
B) NOR
C) NAND
D) XOR
Answer: B

Q482. Which storage device uses magnetic disks and allows permanent storage?
A) SSD
B) Hard Disk
C) RAM
D) ROM
Answer: B

Q483. Which device can both input and output data?
A) Keyboard
B) Touch Screen
C) Monitor
D) Printer
Answer: B

Q484. Which device reads hand-written or printed text into digital form?
A) OCR
B) OMR
C) MICR
D) Scanner
Answer: A

Q485. Which memory type is used for storing temporary data for currently running programs?
A) ROM
B) RAM
C) Flash
D) Cache
Answer: B

Q486. Which type of CPU memory stores instructions needed immediately by the processor?
A) RAM
B) Cache
C) ROM
D) Hard Disk
Answer: B

Q487. Which computer component interprets and executes instructions?
A) ALU
B) Control Unit
C) CPU
D) Register
Answer: C

Q488. Which device reads marks on exams for automated scoring?
A) OCR
B) OMR
C) MICR
D) Barcode Reader
Answer: B

Q489. Which memory type is volatile and loses its content when power is off?
A) RAM
B) ROM
C) Flash
D) EEPROM
Answer: A

Q490. Which device reads magnetic ink characters on bank cheques?
A) OCR
B) MICR
C) OMR
D) Barcode Reader
Answer: B

Q491. Which CPU component executes arithmetic operations?
A) ALU
B) Control Unit
C) Cache
D) Register
Answer: A

Q492. Which generation of computers is associated with AI and natural language processing?
A) Third
B) Fourth
C) Fifth
D) Sixth
Answer: C

Q493. Which input device captures audio signals for computer processing?
A) Keyboard
B) Microphone
C) Scanner
D) Joystick
Answer: B

Q494. Which device reads barcode labels in supermarkets?
A) OCR
B) OMR
C) Barcode Reader
D) MICR
Answer: C

Q495. Which memory type temporarily stores instructions and data currently in execution?
A) ROM
B) RAM
C) Hard Disk
D) Flash
Answer: B

Q496. Which type of printer creates output without striking the paper?
A) Dot Matrix
B) Inkjet
C) Laser Printer
D) Daisy Wheel
Answer: B

Q497. Which device displays computer output on a screen?
A) Printer
B) Monitor
C) Plotter
D) Projector
Answer: B

Q498. Which storage device is fast, non-volatile, and uses solid-state memory?
A) RAM
B) SSD
C) Hard Disk
D) Cache
Answer: B

Q499. Which input device can detect gestures for gaming?
A) Joystick
B) Motion Sensor
C) Keyboard
D) Mouse
Answer: B

Q500. Which logic gate outputs 1 when both inputs are 0?
A) AND
B) NOR
C) NAND
D) XOR
Answer: B