Computer Fundamental

note!Answer: C) Screen
A screen is an output device, while touch screen, mouse and MIDI are input devices.

note!Answer: C) Mainframe
Mainframes are large computers, while desktops, laptops and handheld PCs are microcomputers.

note!Answer: A) Microcomputer
A personal computer is a type of microcomputer designed for one user.

note!Answer: D) CD-ROM
A CD-ROM drive is an external storage drive connected to the motherboard, not a motherboard component.

note!Answer: A) Electrolyze data
A computer must input, process, store and output data; electrolysis of data is not a computer function.

note!Answer: D) Gigahertz
A microprocessor’s clock speed is measured in Hertz (Hz). Modern computers commonly express processor clock speed in Gigahertz (GHz), where \(1\text{ GHz} = 10^9\text{ Hz}\).

note!Answer: B) Digital
Digital computers work with discrete values and produce higher accuracy than analog computers.

note!Answer: A) Paper tape
Paper tape was used for data storage before magnetic tape, disks and core memory.

note!Answer: C) Modem connection
A communication port (serial/COM port) is commonly used to connect a modem.

note!Answer: D) Com port
In traditional computer systems, an external modem was commonly connected through a COM (Communication) port, which is a serial communication interface.

note!Answer: A) Assembly
Assembly language is a low-level language that maps closely to machine instructions. Machine language is also low level, but it is not offered as the intended choice here.

note!Answer: D) All of the above
Zip disks, pen drives and floppy disks can all be removed from the computer.

note!Answer: C) 640MB
A standard CD holds about 640 MB (700 MB for some versions).

note!Answer: D) CD
A keyboard, mouse, and printer are hardware devices used to input or output data. A CD (Compact Disc) is a storage medium, not a hardware device in the intended context of this traditional MCQ.

note!Answer: C) EEPROM
EEPROM can be erased and reprogrammed electrically, unlike PROM and EPROM.

note!Answer: A) China
The abacus is an ancient counting device traditionally associated with China. It was used to perform arithmetic calculations before modern calculators and computers existed.

note!Answer: A) Switching mode power supply
SMPS means Switched Mode Power Supply, a compact and efficient type of power supply used in computers.

note!Answer: C) Utility software
Antivirus software is classified as utility software because it helps maintain and protect a computer system by detecting, preventing, and removing malware.

note!Answer: A) Super computer
Computers are commonly classified by the type of data they process into three basic types: Analog, Digital, and Hybrid computers. A supercomputer is classified by its processing power, not by this data-processing classification.

note!Answer: A) Software
Software provides the instructions and interface that allow users to interact with the computer’s CPU and other hardware. It acts as a link between the user and the computer system.