The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer architectures.

Correct Option: C

The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer architectures.

ENIAC was the first electronic general-purpose computer. It was Turing-complete, digital, and capable of being reprogrammed to solve a full range of computing problems. It was designed to calculate artillery firing tables for the United States Army's Ballistic Research Laboratory.

Correct Option: B

ENIAC was the first electronic general-purpose computer. It was Turing-complete, digital, and capable of being reprogrammed to solve a full range of computing problems. It was designed to calculate artillery firing tables for the United States Army's Ballistic Research Laboratory.

The IBM PC XT was the successor of the IBM PC. The XT stands for EXtended Technology and was introduced in early 1983. It had enhanced features: CGA graphic card, hard disk, more memory, and no more tape port. The term PC-XT refers to personal computer extended Technology.

Correct Option: B

The IBM PC XT was the successor of the IBM PC. The XT stands for EXtended Technology and was introduced in early 1983. It had enhanced features: CGA graphic card, hard disk, more memory, and no more tape port. The term PC-XT refers to personal computer extended Technology.

The kilobyte (symbol: kB) is a multiple of the unit byte for digital information. Although the prefix kilomeans 1000, the term kilobyte and symbol kB have historically been used to refer to either 1024 bytes or 1000 (103) bytes, dependent upon context, in the fields of computer science and information technology.

Correct Option: D

The kilobyte (symbol: kB) is a multiple of the unit byte for digital information. Although the prefix kilomeans 1000, the term kilobyte and symbol kB have historically been used to refer to either 1024 bytes or 1000 (103) bytes, dependent upon context, in the fields of computer science and information technology.

A personal computer (PC) is any general-purpose computer whose size, capabilities, and original sales price make it useful for individuals, and which is intended to be operated directly by an end-user with no intervening computer operator. This contrasted with the batch processing or time-sharing models which allowed larger, more expensive minicomputer and mainframe systems to be used by many people.

Correct Option: B

A personal computer (PC) is any general-purpose computer whose size, capabilities, and original sales price make it useful for individuals, and which is intended to be operated directly by an end-user with no intervening computer operator. This contrasted with the batch processing or time-sharing models which allowed larger, more expensive minicomputer and mainframe systems to be used by many people.