Computer Fundamental Miscellaneous - Study Mode
[#841] A device that converts one type of signal into another is called
Correct Answer
(B) Transducer
Explanation
Solution: 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.
[#842] Which method is of reading the characters & providing input to a computer.
Correct Answer
(A) Optical character reader
Explanation
Solution: 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) .
[#843] Which facilitates data processing capabilities at the location of the end-user.
Correct Answer
(C) DDP
Explanation
Solution: 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.
[#844] The memory which is programmed at the time it is manufactured
Correct Answer
(A) ROM
Explanation
Solution: The data stored in the ROM, the 'contents', are programmed by the manufacturer during fabrication according to a specification supplied by the customer.
[#845] When was the world's first laptop computer introduced in the market and by whom?
Correct Answer
(B) Epson, 1981
Explanation
Solution: 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