The
CDC 1604 was a
48-bit computer designed and manufactured by
Seymour Cray and his team at the
Control Data Corporation (CDC). The 1604 is known as one of the first commercially successful
transistorized computers. (The
IBM 7090 was delivered in November 1959.) Legend has it that the 1604 designation was chosen by adding CDC's first street address (501 Park Avenue) to Cray's former project, the ERA-Univac 1103. A cut-down 24-bit version, designated the CDC 924, was also produced.