In late 1970 or early 1971 , TI dropped out being unable to make a reliable part .
In 1969 , CTC contracted two companies , Intel and Texas Instruments , to make a single - chip implementation , known as the CTC 1201 .
In late 1970 or early 1971 , Texas Instruments dropped out being unable to make a reliable part .
In 1969 , CTC contracted two companies , Intel and Texas Instruments , to make a single - chip implementation , known as the CTC 1201 .