Computer fundamental MCQ Questions and answers- Technical Aptitude

In computer fundamentals, a device that receives information from a CPU is typically categorized as an output device. Output devices are peripherals that provide the user with information processed by the computer. They display or present data processed by the CPU.

Computer Operators, Operate the devices which input and output data from the computer.

On 8^th March 1983, IBM released the Personal Computer XT, short for extended Technology, or PC/XT, or just XT. It came equipped with a 10 megabyte MFM Full-Height Hard Disk Drive with 306 Cylinders, 4 Heads, and 17 512-byte Sectors, was expandable to 640k of RAM on the Motherboard, and came with MS-DOS v2.2.

Although we can store the data in diskettes then why it is not used for the storage purposes. A diskette is a random access, removable data storage medium that can be used with personal computers.

It represents the decimal numbers through a string of binary digits that are true for the digital computer. The advantage of the Binary Coded Decimal system is that each decimal digit is represented by a group of 4 binary digits or bits in much the same way as Hexadecimal.

A graphics printer that draws images with ink pens. Plotters actually draw point-to-point lines directly from vector graphics files. The plotter was the first computer output device that could print graphics as well as accommodate full-size engineering and architectural drawings.

Magnetic core Memory is non volatile. Semi conductor memory is faster, economical, smaller in size and lighter, but magnetic memories are slower compared to that. Semi conductor memories consumes less power, but magnetic memory consumes more power than that.

Magnetic tape is a medium for magnetic recording, made of a thin, magnetizable coating on a long, narrow strip of plastic film. It was developed in Germany in 1928, based on magnetic wire recording. Devices that record and play back audio and video using magnetic tape are tape recorders and video tape recorders respectively. A device that stores computer data on magnetic tape is known as a tape drive.

Scratchpad memory (SPM), also known as scratchpad, scratchpad RAM or local store in computer terminology, is a high-speed internal memory used for temporary storage of calculations, data, and other work in progress.

The half adder is an example of a simple, functional digital circuit built from two logic gates. The half adder adds two one-bit binary numbers (AB). The output is the sum of the two bits (S) and the carry (C).