Invent | MCQs

Explanation

John Vincent Atanasoff invented the first digital computer in 1930. 

The inventor of the first Digital Computer belonged to the country: USA

John Vincent Atanasoff died in 1995.

Digital computer:

The Digital Computer operates on a Binary system

Explanation

Laser technology is used in compact disc

Compact Disc is an example of Optical Storage

James T. Russell invented C.D. (Compact Disc).

 co-developed by Philips and Sony to store and play digital audio recordings.

history

 In August 1982, the first compact disc was manufactured.

It was then released in October 1982 in Japan and branded as Digital Audio Compact Disc.

It was released on March 2, 1983, in North America and Europe.

FIA CBT VU PAPER 22-12-2021

ND30-4-2023

Explanation

Keyboard is an input device.

Keyboard is similar to electric typewriter.

Keyboard uses serial port to connect with computer.

Keys on keyboard are of mainly three types:

Alphanumeric keys: letters and numbers 

Punctuation keys: comma, period, semicolon, etc.

Special keys: function keys, arrow keys, caps lock key, etc. 
Keyboard inventor: Christopher Latham 

Explanation

A liquid-crystal display  is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers.

Liquid crystals do not emit light directly,instead using a backlight or reflector to produce images in color or monochrome.

Explanation

By is a preposition here.

By shows a doer of an action

Invent means ایجاد کرنا

Explanation

Ingenuity چالاقی

Laziness سستی

Cleverness چالاقی

Unfairness غیر منصفانہ

Hopelessness ناامیدی

Injustice ناانصافی

Explanation

Boat was invented by NUH as.

Bridge was invented by YUSUF as.

Comb was invented by IBRAHIM as.

Mirror was invented by SULAIMAN as.

Explanation

Explanation

Computer is an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.

Explanation

A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. Modern computers have the ability to follow generalized sets of operations, called programs.