Texas Instruments TI-450

This rare TI-450 was introduced in the year 1973 soon after the TI-3500. The main limitation in daily use of the TI-3500 was the lack of a memory. The TI-450 used instead of the modern "calculator-on-a-chip" invented already in the year 1971 a two-chip solution. The TMS02xx/TMS03xx family gives both enhanced driving capabilities for 12-digit displays and enhanced memory for program and data.