Computer fundamental MCQ Questions and answers- Technical Aptitude

PASCAL : Pascal is an imperative and procedural programming language, which Niklaus Wirth designed in 1968–69 and published in 1970, as a small, efficient language intended to encourage good programming practices using structured programming and data structuring. It is named in honor of the French mathematician, philosopher and physicist Blaise Pascal.

A 'number crunching' computer is one that can handle large volume of numbers. Super computer also called number crunching computer.

A barcode scanner, also called a point-of-sale (POS) scanner or a price scanner, is a device used to capture and read information contained in a barcode. The scanner consists of a light source, a lens and a light sensor that translates optical impulses into electrical ones.

A processing unit that coordinates networks and data communication is known as Communications processor.

Band Printer : A line printer that uses a metal band, or loop, of type characters as its printing mechanism. The band contains a fixed set of embossed characters that can only be changed by replacing the band. The band spins horizontally around a set of hammers, one for each print column.

Source : pcmag.com

Semiconductor memory is a digital electronic data storage device, often used as computer memory, implemented with semiconductor electronic devices on an integrated circuit (IC).

Components on the motherboard of a PC processor unit are linked together by sets of parallel electrical conducting lines. An important set of components on the motherboard is the chipset. The chipset is composed of various integrated circuits attached to the motherboard.

A point of sale terminal (POS terminal) is an electronic device used to process card payments at retail locations. A POS terminal generally does the following:
1. Reads the information off a customer’s credit or debit card
2. Checks whether the funds in a customer’s bank account are sufficient
3. Transfers the funds from the customer’s account to the seller’s account (or at least, accounts for the transfer with the credit card network)
4. Records the transaction and prints a receipt

Source : techopedia.com

The general range of speed in revolutions per minute of rotation of a floppy disk is 150 - 250. Revolutions per minute are the number of turns taken in every one minute.

A computer keyboard is an input device used to enter characters and functions into the computer system by pressing buttons, or keys. It is the primary device used to enter text. A keyboard typically contains keys for individual letters, numbers and special characters, as well as keys for specific functions.