Raha tsy voatanisa ny toerana misy anao dia safidio ny iray amin'ireto manaraka ireto:
ON Semiconductor
IC 12-BIT GEN/CHKER 16DIP.
Texas Instruments
IC 8-BIT GEN/CHKER 24DIP.
IC 16-BIT GEN/CHKER 14DIP.
IC GENERATOR/CHECKER 9BIT 14-DIP.
IC 9-BIT GEN/CHKER 14DIP.