The ZKit-51 Analog I/O Board provides A-to-D and D-to-A capabilities to the main board. The board is based on NXP PCF8591 8-bit A/D and D/A converter, with four analog inputs, one analog output and a serial I2C interface.
The ZKit-51 Analog I/O Board offers the ...
The RS232 Transceiver provides RS232 level conversion, and allows ZKit-51 to connect directly to RS232 port of other devices.
The ZKit-51 Transceiver offers the following features
D-type 9 pin female connector
Powered from motherboard
Compact board, accomodated within the D-shell of the connector