Black Box 488 Controller parallel/serial adapter - 14 ports

With the 488 Controller, you can control up to 14 IEEE 488 bus instruments from any RS-232 async device. The 488 Controller converts a host computer into an IEEE 488 bus talker, listener, and controller. Interpreting simple high-level commands sent from the computer's serial port, the 488 Controller performs the necessary, and usually complex, bus control and handshaking. The commands and protocols are similar to those used by the Hewlett Packard HP-85 computer.