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They specifically require the use of ASCII character set "transmitted as an 8-bit byte with the high-order bit cleared to zero" and some of these [1] explicitly restrict all data to 7-bit characters. For the first few decades of email networks (1971 to the early 1990s), most email messages were plain text in the 7-bit US-ASCII character set. [2]
PETSCII (PET Standard Code of Information Interchange), also known as CBM ASCII, is the character set used in Commodore Business Machines' 8-bit home computers.. This character set was first used by the PET from 1977, and was subsequently used by the CBM-II, VIC-20, Commodore 64, Commodore 16, Commodore 116, Plus/4, and Commodore 128.
8+: <0–3 bytes padding>, defaultbyte1, defaultbyte2, defaultbyte3, defaultbyte4, npairs1, npairs2, npairs3, npairs4, match-offset pairs... key → a target address is looked up from a table using a key and execution continues from the instruction at that address lor 81 1000 0001 value1, value2 → result bitwise OR of two longs lrem 71 0111 0001
This page shows the classification of key types from the point of view of key management. In a key management system, each key should be labeled with one such type and that key should never be used for a different purpose. According to NIST SP 800-57 (Revision 4) the following types of keys exist: [2] [1] [3] Private signature key
The key might specify "spiral inwards, clockwise, starting from the top right". That would give a cipher text of: EJXCTEDEC DAEWRIORF EONALEVSE Route ciphers have many more keys than a rail fence. In fact, for messages of reasonable length, the number of possible keys is potentially too great to be enumerated even by modern machinery.
Num Lock would be used to select between the two functions. On some laptop computers, the Num Lock key is used to convert part of the main keyboard to act as a (slightly skewed) numeric keypad rather than letters. On some laptop computers, the Num Lock key is absent and replaced by the use of a key combination. [1]
On Wikipedia, access keys allow you to do a lot more—protect a page, show page history, publish your changes, show preview text, and so on. See the next section for the full list. Most web browsers require holding down one or two modifier keys to use an access key.
CHIP-8 is an interpreted programming language, developed by Joseph Weisbecker on his 1802 microprocessor. It was initially used on the COSMAC VIP and Telmac 1800, which were 8-bit microcomputers made in the mid-1970s. CHIP-8 was designed to be easy to program for, as well as using less memory than, other programming languages like BASIC. [1]