Texas Instruments TI-500
500-5840 - Texas Instruments
Adapter base, to fit 520C/530C/530T CPUs onto old style sump CPU bases..
500-5011 - Texas Instruments
Siemens Texas Instruments 500-5011 Output Module 8-Point..
Adapter base, to fit 520C/530C/530T CPUs onto old style sump CPU bases..
Siemens Texas Instruments 500-5011 Output Module 8-Point..