Computer fundamental MCQ Questions and answers- Technical Aptitude

A transducer is a device that converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another.

Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene-photo (for example the text on signs and billboards in a landscape photo) .

DDP facilities data processing capabilities at the location of the end-user. Distributed data processing is a computer-networking method in which multiple computers across different locations share computer-processing capability.

The data stored in the ROM, the 'contents', are programmed by the manufacturer during fabrication according to a specification supplied by the customer.

The Epson HX-20 (also known as the HC-20) was the first laptop computer. It was invented in July 1980 by Yukio Yokozawa, who worked for Suwa Seikosha, a branch of Japanese company Seiko (now Seiko Epson), receiving a patent for the invention. It was announced in 1981 as the HC-20 in Japan, and was introduced by Epson in North America as the HX-20 in 1981, at the COMDEX computer show in Las Vegas, where it drew significant attention for its portability.

Source : wikipedia.org

Numerical data represent values that can be measured and put into a logical order. Examples of numerical data are height, weight, age; number of movies watched, IQ, etc. To graph numerical data, one uses dot plots, stem and leaf graphs, histograms, box plots, ogive graphs, and scatter plots.

Data manipulation refers to the process of adjusting data to make it organized and easier to read. These commands tell the database where to select data from and what to do with it.

A transceiver is a device comprising both a transmitter and a receiver that are combined and share common circuitry or a single housing. When no circuitry is common between transmit and receive functions, the device is a transmitter-receiver. The term originated in the early 1920s.

An automatic machine that performs routine seemingly human tasks is Robot. Robot any automatically operated machine that replaces human effort, though it may not resemble human beings in appearance or perform functions in a humanlike manner.

IBM 7000 digital computer has modular construction. The IBM 700/7000 series is a series of large-scale (mainframe) computer systems that were made by IBM through the 1950s and early 1960s.