“Other known methods and devices relating particularly to input devices are described in U.S. Pat. No. 5,752,827 issued on May 19, 1998 to Baron et al. Baron et al. teach a specialized input keyboard ...

Your commands, ideas, demands and concepts form the data your system processes and stores. Without user input, a computer simply takes up desktop space and waits for directions, like a lost motorist ...

Ladder logic uses switch or relay contacts to implement Boolean expressions. In years past, ladder logic was made possible with discrete relays and was sometimes termed “relay logic.” Today most ...