Computer fundamental MCQ Questions and answers- Technical Aptitude

The 0 and 1 in the binary numbering system are called binary digits or Bits. A bit is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1.

A diskette, also known as a floppy disk, is a random access, removable data storage medium that can be used with personal computers. The term usually refers to the magnetic medium housed in a rigid plastic cartridge measuring 3.5 inches square and about 2 millimeters thick.

The control unit (CU) is a component of a computer's central processing unit (CPU) that directs the operation of the processor. It tells the computer's memory, arithmetic/logic unit and input and output devices how to respond to the instructions that have been sent to the processor.

All calculations are performed and all comparisons are made in Arithmetic-logic unit. An arithmetic logic unit (ALU) is a combinational digital electronic circuit that performs arithmetic and bitwise operations on integer binary numbers.

ASCII is the traditional name for the encoding system, the Internet Assigned Numbers Authority (IANA) prefers the updated name US-ASCII, which clarifies that this system was developed in the US and based on the typographical symbols predominantly in use there.

The terminal device often used in checking charge cards that offers both a limited keyboard input and visual output is the Video display terminal. VDT (video display terminal or sometimes visual display terminal) is a term used, especially in ergonomic studies, for the computer display.

It has no value because it's “off”. Therefore, it is a 0 digit. Conversely, if the state is “on”, then it has value. We can represent it as a 1 digit. Binary code, code used in digital computers, based on a binary number system in which there are only two possible states, off and on, usually symbolized by 0 and 1.

George Stibitz made the original version of this in 1936 on his kitchen table, hence the name “Model K”. Using scrapped relays from Bell Labs and strips of metal from a tin can, it can add two binary digits. In November 1937, George Stibitz, then working at Bell Labs (1930 - 1941), completed a relay-based calculator he later dubbed the “Model K” (for “kitchen table”, on which he had assembled it), which calculated using binary addition.

Common direct access storage devices include solid-state drives (SSDs) and hard disk drives (HDDs). Direct access storage devices include RAID arrays like the one pictured here, hard disk drives, solid state drives, and systems like magnetic drums and data cells, optical discs and PC storage devices.