Mechanical
Era (1642 - 1890)
- All computation done by by machines and
gears
- Blaise
Pascal (1642)
- Designed first gear based calculator system
- Joseph Jacquard (1801)
- Automated loom that used wood punch cards
- Charles Babbage (1833)
- For fun he would try to spot errors in
mathematical tables
- Designed analytical, difference engines
(machines)
- Included input and output devices, processor
and storage
- Could NOT be built because of level of
precision needed
- His ideas laid foundations for today's
computers (Input - Process - Output)
- Electricity availability becoming widespread
- Ada
Byron Lovelace First
computer programmer