Computer Fundamentals

Printers are generally categorized into four main types: impact, inkjet, laser, and thermal printers.

BASIC is a family of general-purpose, high-level programming languages whose design philosophy emphasizes ease of use. It stands for Beginners' All-purpose Symbolic Instruction Code.

The Memory Data Register (MDR) is the register in a computer's processor that stores the data being transferred to and from the immediate access store.

MDR stands for Memory Data Register, which is responsible for holding the data that is being read from or written to memory.

VLSI (often miswritten as VLSE in some texts) stands for Very Large Scale Integration, referring to the process of creating an integrated circuit by combining millions of MOS transistors onto a single chip.

The fourth generation of computers, characterized by the use of microprocessors, is generally considered to have started in the mid-1970s and continued through the 1980s.

CD-ROM stands for Compact Disc Read-Only Memory, a type of optical storage medium.

In BASIC programming, the LET statement is used to assign a value to a variable.

In BASIC, variables that store strings (sequences of characters) are denoted by a '$' sign at the end of the variable name.

HTTP stands for Hypertext Transfer Protocol, the foundation of data communication for the World Wide Web.

MICR stands for Magnetic Ink Character Recognition, a technology used primarily by the banking industry to facilitate the processing and clearance of cheques.

PDA stands for Personal Digital Assistant, a term for a class of mobile devices that functioned as personal information managers.

Machine language is the lowest-level programming language, consisting of binary code (0s and 1s) that the computer's CPU can execute directly.

A notebook computer is a portable personal computer that is typically lightweight and compact, often weighing around 6 pounds or less.

Assembly language uses mnemonics or opcodes (like MOV, ADD, JMP) to represent machine code instructions, making it easier for humans to read than raw binary.

WAIS stands for Wide Area Information Server. It is a client-server system that allows the indexing and searching of databases on remote computers.

The main operations of Boolean algebra are the conjunction and, denoted by ∧, the disjunction or, denoted by ∨, and the negation not, denoted by ¬.

Pascal was developed by Niklaus Wirth in 1970 as a language for teaching structured programming. The option 'Nicklaus' appears to be a shortened version of Niklaus Wirth. John Backus developed Fortran.

Computers typically utilize binary coding systems such as BCD (Binary Coded Decimal), EBCDIC (Extended Binary Coded Decimal Interchange Code), and ASCII (American Standard Code for Information Interchange). These represent the three basic types often cited in foundational computer science curricula.

COBOL is an acronym for Common Business Oriented Language. It was designed specifically for business data processing.

E-commerce, or electronic commerce, refers to the buying and selling of goods or services using the internet. It is the standard term for online commercial transactions.

A chain printer uses a rotating chain or band containing embossed characters. When the desired character on the chain aligns with the print hammer, the hammer strikes the paper against the ribbon and character.

Printers are broadly categorized by their printing mechanism and speed, with line printers and serial (character) printers being the two primary classifications used in computing history.

In networking, a node is any device connected to the network that can send, receive, or forward information. This includes computers, printers, and terminals.