10 Oldest Computers in The World

10. Universal Automatic Computer 1 (UNIVAC 1) Year Invented: 1951 Country:  USA Main Feature:  Commercial Size:  14’ (W) x 8’ (D) x 8.5’ (H)

9. Ferranti Mark 1 Year Invented: 1981 Country:  England Main Feature:  General Purpose Commercial Size:  Two bays measuring 16.4’ (W) x 3.3’ (D) x 7.9’ (H)

8. ACE Year Invented: 1950 Country:  UK Main Feature:  Stored-Program Computer Size:  Two bays measuring 16.4’ (W) x 3.3’ (D) x 7.9’ (H)

7. Manchester Mark 1 Year Invented: 1948 Country:  England Main Feature:  Stored Program Computer Size:  17” (W) x 4.2’ x (D) x 7.25’ (H)

6. ENIAC 1 Year Invented: 1946 Country:  USA Main Feature:  Weapon-deployment calculations Size:  100’ (W) x 3’ (D) x 8’ (H)

5. Harvard Mark 1 Computer Year Invented: 1944 Country:  USA Main Feature:  Electromechanical Computations Size:  51’ (W) x 2’ (D) x 8’ (H)

4. Colossus Mark 1 Year Invented: 1943 Country:  England Main Feature:  Wireless Message Interception Size:  17’ (W) x 11’ (D) x 7’ (H)

3. Atanasoff-Berry Computer (ABC) Year Invented: 1942 Country:  USA Main Feature:  Digital Computing Size:  1797.5 square feet

2. Z1 Year Invented: 1936 Country:  Germany Main Feature:  Freely Programmable Size:  Built in a living room, although unknown since it was destroyed.

1. Antikythera Mechanism Year Invented: Between 200 and 50 BCE Country:  Greece Main Feature:  Analogue Computation Size:  Around 14.3” (W) x 7.5” (D) x 5.2” (H)