Computer Fundamental Miscellaneous - Study Mode

[#791] The basic components of a modern digital computer are :
Correct Answer

(D) All of the above

Explanation

Solution: A typical digital computer system has four basic functional elements: 1) Input-output equipment, 2) Main memory, 3) Control unit, and 4) Arithmetic-logic unit. Any of a number of devices is used to enter data and program instructions into a computer and to gain access to the results of the processing operation.

[#792] What does that acronym EGA stand for?
Correct Answer

(D) Enhanced Graphics Adapter

Explanation

Solution: The Enhanced Graphics Adapter is an IBM PC computer display standard from 1984 that superseded and exceeded the capabilities of the CGA standard introduced with the original IBM PC, and was itself superseded by the VGA standard in 1987.

[#793] A beam of light used to record and retrieve data on optical disks is known as
Correct Answer

(C) laser

Explanation

Solution: In optical-storage technology, a laser beam encodes digital data onto an optical, or laser, disk in the form of tiny pits arranged in concentric tracks on the disk's surface.

[#794] Punched-card equipment was first introduced in Britain in 1904 by a small company. What was the name of that company?
Correct Answer

(A) The Tabulator Ltd.

Explanation

Solution: The Tabulator Ltd punched-card equipment was first introduced in Britain in 1904 by a small company. Punched card equipment sold by IBM after 1931, you will find complete hardware support for IBM's alphanumeric Hollerith code, but you will also find that the majority of the machines sold were limited to numeric applications.

[#795] The computer translates the condition of each switch to a number. What number is represented by the ON state?
Correct Answer

(C) 1

Explanation

Solution: The computer translates the condition of each switch to a number. 1 represents a value, e.g. on, go, present, all clear, etc. 0 represents no value, e.g. off, stop, absence, not clear, etc. Digital signal is 0 or 1.