Computer fundamental MCQ Questions and answers- Technical Aptitude

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.

The Enhanced Graphics Adapter is an IBM PC computer display standard from 1984 that superseded and exceeded the capabilities of the CGA standard introduced with the original IBM PC, and was itself superseded by the VGA standard in 1987.

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.

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.

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.

In computer science, a double-sided disk is a disk of which both sides are used to store data. Early floppy disks only used one surface for recording. The term single-sided disk was not common until the introduction of the double-sided disk, which offered double the capacity in the same physical size.

In computing, a cache is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere.

In serial, asynchronous transmissions, the stop bit is used to signal the end of the character within the data frame.

An automated external defibrillator (AED) is a medical device designed to analyze the heart rhythm and deliver an electric shock to victims of ventricular fibrillation to restore the heart rhythm to normal. Ventricular fibrillation is the uncoordinated heart rhythm most often responsible for sudden cardiac arrest.

Input controls are interactive elements of the Interfaces. It allows users to enter the information into the system's interface. Determine that appropriate input controls are used to ensure accuracy and completeness of data.