Computer Fundamental

note!Answer: D) All of the above
Direct-entry input devices allow data to be entered directly into a computer without manually typing every character. An optical scanner, mouse, digitizer, and light pen are all considered direct-entry input devices.

note!Answer: D) Understanding
Computers are fast, accurate and diligent but have no understanding or intelligence of their own.

note!Answer: B) Programmable read only memory
PROM stands for Programmable Read-Only Memory. It is a type of non-volatile memory that can be programmed by the user once. After programming, its contents generally cannot be erased or changed.

note!Answer: B) RAM
RAM is primary volatile memory, not a mass storage device like CD-ROM, hard disk or tape.

note!Answer: C) Arithmetic and logical unit
All arithmetic and logical calculations are performed in the Arithmetic and Logic Unit (ALU).

note!Answer: B) Register
Registers are the fastest memory inside the CPU, so they have the shortest access time.

note!Answer: D) Excel
Excel is application software, while the OS, translators and emulators are system software.

note!Answer: B) EDSAC
EDSAC stands for Electronic Delay Storage Automatic Calculator, an early British computer.

note!Answer: A) Disk
Disk storage is mechanical and has the slowest access time among these options.

note!Answer: D) PPM
The speed of a laser printer is measured in PPM, which stands for Pages Per Minute. It indicates how many pages the printer can print in one minute.

note!Answer: A) Magnetic metallic oxide
Hard disk platters are coated with a magnetic metallic oxide layer that stores data magnetically.

note!Answer: B) Application software
Application software is designed to perform specific tasks for users, such as word processing.

note!Answer: A) Interpreter
An interpreter translates and executes one statement at a time, while a compiler translates the whole program at once.

note!Answer: B) Slave
A slave device operates under the control of a master device.

note!Answer: B) Impact printer
A daisy wheel printer strikes a character head against an inked ribbon, so it is an impact printer.

note!Answer: D) Electronic
A computer is an electronic machine that processes data using electronic circuits.

note!Answer: A) Microsoft word
Microsoft Word is application software, while Windows, device drivers and utilities are system software.

note!Answer: B) 1024 bytes
One kilobyte equals 1024 bytes in binary measurement.

note!Answer: B) Touch pad
A touch pad lets the user point to and select positions on the screen, so it is a pointing device.

note!Answer: D) No one
CD and DVD are optical storage devices, while a pen drive uses flash memory (semiconductor storage). None of the given options is a magnetic storage device.