Inthehundredorsoyearssincecomputerswere firstinvented,they’veshrunkamazinglyinsizeandgrownconsiderablyincomputingpower.
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Theworld’sfirstprogrammable,electronic,general-purposedigitalcomputerwascompletedin 1945.KnownasENIAC,it’sfirstprogramwasastudyofthefeasabilityof athermonuclearweapon.
ENIACreliedontheuseofpunchcardstoinputandoutputinformation.Bytheendofitsoperationin 1956,itcontainedover18,000vacuumtubes, 7,200crystaldiodes, 1,500relays, 70,000resistors, 10,000capacitors, andapproximately5,000,000hand-solderedjoints.
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There’sa lot packed into this tiny device. In addition to RAM and photovoltaics, itcontainsprocessors and a wireless transmitter and receiver. Because it is too small to house aradio antennae, it receives and transmits data using visible light.
There is some controversy over whether this microdevice is indeed a computer.Once it loses power, it also loses all its programming and data, which some expertsfeel disqualifies it from true computer status. Regardless, it is proving to bea very usefultool.
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- Sensing pressurewithin the eye to aid withglaucoma diagnosis
- ҕling cancer
- Monitoring oil reservoirs
- Monitoring biochemical processes
- Audio and visualsurveillance
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- 1613 –Theword“computer”sees its first recorded use. It originallyreferred toa personwho performed calculations.
- 1960 – The first modern computerarrivesin New Zealand– the IBM 650, leased to the New Zealand Treasury.
- 1968 – The first desktopPCwas developed and mass-marketed by Hewlett Packard.
- 1975 – The first portable computer was released by IBM. It weighednearly 25kg.
Sources
Smithies(2014) -
Carpenter(2020) -
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