[Usmar A. Padow] put together an Arduino Uno, SD card, four line character LCD, and PS/2 keyboard. but he’s also included alternative options to go without an LCD screen by using a computer ...

This ps/2 keyboard to Arduino interface program allows you to print what you type on the ps/2 keyboard onto an LCD screen conected to the Arduino. The program uses interrupts to read each bit from the ...

The PS2 Keyboard interface is a Bi-directional two wire interface with a clock line and a data line which you connect to your Arduino (see above), the keyboard protocol has many nuances all of which ...

The LCD data lines are driven directly by 3.3V logical levels of MAX3421E while the VDD is connected to 5V. the LCD contrast can be adequately biased by using this method. ... Arduino Keyboard USB.

Plus, of course, a PS/2 jack to plug in a keyboard and power it up. Interestingly, the 16×2 display is an old Parallax unit, from the days when RadioShack still existed and sold their stuff.