COMPUTER FUNDAMENTALS

COMPUTER HISTORY AND EVOLUTION

DEVELOPMENT OF COMPUTERS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many mechanical relays were in the Harvard Mark I?
A
150
B
700
C
1750
D
3500
Explanation: 

Detailed explanation-1: -The ASCC used 500 miles (800 km) of wire with three million connections, 3, 500 multipole relays with 35, 000 contacts, 2, 225 counters, 1, 464 tenpole switches and tiers of 72 adding machines, each with 23 significant numbers. It was the industry’s largest electromechanical calculator.

Detailed explanation-2: -The Harvard Mark I (also known as the IBM Automatic Sequence-Controlled Calculator) was a relay computer controlled by punched tape that IBM began to develop in 1939 and completed in 1944. It was based on a suggestion that had been put forward by Howard H. Aiken in 1937.

Detailed explanation-3: -Each COLOSSI used 1, 600 vacuum tubes (Mark I) and 2, 400 vacuum tubes (Mark II). The wartime codebreaking at BP was kept secret until the 1970s. Also during the war, electro-mechanical binary computers were being developed by Konrad Zuse.

There is 1 question to complete.