Computing History 1947-1951

1947 –The transistor

Invented by William Shockley (seated) John Bardeen & Walter Brattain at Bell Labs.
The transistor replaces bulky vacuum tubes with a smaller, more reliable, and power saving solid sate circuit.

1951 – UNIVAC

First commercial computer -  Between 1951 and 1958, 47 UNIVAC I computers were delivered.

1951 – UNIVAC Mercury delay unit (1 of 7)þ

UNIVAC mercury delay units containing 18 delay lines, each of which stored 120 bits. Total of 2,160 bits, or 144 fifteen bit words per memory unit.

1951 – UNIVAC

UNIVAC tape units.

1951 – UNIVAC

UNIVAC tube board and individual vacuum tube.