Older operating systems such as TOPS-10, along with CP/M, tracked file length only in units of disk blocks and used Control-Z (SUB) to mark the end of the actual text in the file. For this reason, EOF, or end-of-file, was used colloquially and conventionally as a three-letter acronym for Control-Z instead of SUBstitute. The end-of-text code (ETX), also known as Control-C, was inappropriate for a variety of reasons, while using Z as the control code to end a file is analogous to it ending the alphabet and serves as a very convenient mnemonic aid. A historically common and still prevalent convention uses the ETX code convention to interrupt and halt a program via an input data stream, usually from a keyboard.
Older operating systems such as TOPS-10 , along with CP / M , tracked file length only in units of disk blocks and used Control - Z ( SUB ) to mark the end of the actual text in the file . For this reason , EOF , or end - of - file , was used colloquially and conventionally as a three - letter acronym for Control - Z instead of SUBstitute . The end - of - text code ( ETX ) , also known as Control - C , was inappropriate for a variety of reasons , while using Z as the control code to end a file is analogous to it ending the alphabet and serves as a very convenient mnemonic aid . A historically common and still prevalent convention uses the ETX code convention to interrupt and halt a program via an input data stream , usually from a keyboard .
What is still the conventional use of the ETX code?
What is still the conventional use of the ETX code ?
to interrupt and halt a program via an input data stream, usually from a keyboard
to interrupt and halt a program via an input data stream, usually from a keyboard