The E2421 Serial Hex Keyboard provides an easy to use debounced hex entry into a byte which is sent at the selected baud rate on closure of the <Enter> key. This keyboard is useful for single stepping serial data without a PC. There are 16 baud rates between 1.2K to 921.6K organized into four baud groups of four specific baud rates. On power up the baud group is set, and following this the specific baud rate can set using the switch settings. The keys are on a 0.375”H by 0.625”V grid and the keyboard is easily mounted with #4 hardware or standoffs. Power input is +3.3V to +5.5V and the outputs are TTL or 3.3V logic compatible.