Padow] put together an Arduino Uno, SD card, four line character LCD, and PS/2 keyboard ... editing once the line has been input. The example programs that [Usmar] shows off are simple to ...

To communicate with each LCD via I2C, two TCA9548A I2C multiplexers are connected to an Arduino, along with an RTC to keep track of the time and date itself. As the TCA9548A has three pins ...