Phonetic keyboard layout Phonetic keyboard layout A phonetic keyboard layout is a setup in which the letters of a language correspond to the keys in the keyboard layout for another language and assumes a one-to-one correspondence between letters in the languages that is based on their sound. Russian has two popular keyboard layouts: The Cyrillic letters are on the same keys as similarly-sounding Roman letters: A-А, Б-B, В-V, Г-G, Д-D, Ф-F, K-K, O-O and so on. There are Russian phonetic layouts based on the QWERTY layout and others based on other localized layouts. The Russian phonetic layout is especially suited for foreigners studying
Computer keyboard the Y lines and, when a key is depressed, detected sequentially by scanning the X lines. The first computer keyboards were for mainframe computer data terminals and used discrete electronic parts. The first keyboard microprocessor was introduced in 1972 by General Instruments, but keyboards have been using the single-chip 8048 microcontroller variant since it became available in 1978. The keyboard switch matrix is wired to its inputs, it converts the keystrokes to key codes, and, for a detached keyboard, sends the codes down a serial cable (the keyboard cord) to the main processor on the computer motherboard. This serial keyboard