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ANSI device numbers are used to identify equipment and devices in electrical power systems and industrial automation. They are enumerated in ANSI/IEEE Standard C37.2 and indicate the protective functions performed by each device.
Learn how to use the major system, a mnemonic technique to memorize numbers by converting them into consonants and words. The system is based on the principle that images are easier to remember than numbers and has a standard mapping of numerals to sounds.
A Caesar cipher is a simple encryption technique that shifts each letter in the plaintext by a fixed number of positions in the alphabet. Learn about its history, usage, examples, and variations, such as the Vigenère cipher and the ROT13 system.
IMEI number is a unique identifier for mobile phones and some satellite phones. It can be used to block stolen phones, track devices, or access regulatory information. Learn how IMEI number works, how to find it, and how it differs from IMSI number.
A substitution cipher is a method of encrypting in which units of plaintext are replaced with ciphertext, using a key. Learn about different types of substitution ciphers, such as simple, mixed, and polyalphabetic, and their security and history.
ASCII is a character encoding standard for electronic communication that represents text in computers, telecommunications equipment, and other devices. It has 128 code points, of which only 95 are printable characters, and it was developed in part from telegraph code and influenced by Unicode.
Base32 is an encoding method based on the base-32 numeral system.It uses an alphabet of 32 digits, each of which represents a different combination of 5 bits (2 5).Since base32 is not very widely adopted, the question of notation—which characters to use to represent the 32 digits—is not as settled as in the case of more well-known numeral systems (such as hexadecimal), though RFCs and ...
Alt code is a method of entering characters that do not have a dedicated key combination on the keyboard, using the Alt key and a numeric code. Learn about the history, usage and limitations of Alt code on Windows, MS-DOS, Unicode and other operating systems.