Friden 1203 Technology

Electronics

Single-chip Rockwell A4540 LSI. Date code 1974.

Architecture, Memory & Speed

• LSI calculator-on-a-chip, so architectural details remain unknowable

Construction

High quality construction on double sided fibreglass PCB with many individual fasteners and a significant component of skilled labour. This construction philosophy was not viable in the early 1970s when calculator prices were plummeting and the 1203 is probably one of the last single-chip machines to have been produced in this manner.