Early Mechanical Computers 2

Question 1

How did Morland’s adding (subtracting) machine work (including the handling of the carry)?

Answer 1

eagle;kaeg

Question 2

What was the approximate date in which Grillet published work on his calculating machine?

Answer 2

1678

Question 3

What were the three commercially produced mechanical calculators and roughly when were they available?

Answer 3

The Thomas Arithmometer (1820s - ~1914)
Baldwin-Odhner Machines (1885 - ~1965)
Key-Driven Machines: Comptometers 1886? Mr. Dorr E. Felt

Question 4

What was the impact of the Thomas Arithmometer?

Answer 4

Thomas created an industry in which mechanical devices were used to aid in calculation

Question 5

How did the variable toothed gear mechanism in the Baldwin- Odhner Machines work and what was the benefit of this design?

Answer 5

aegwaeg

Question 6

What was the advantage of the key-driven machines?

Answer 6

significantly sped up addition?

Question 7

What is the history behind the development of the first key driven machine?

Answer 7

eawgwe