In听the听hundred听or听so听years听since听computers听were first听invented,听they鈥檝e听shrunk听amazingly听in听size听and听grown听considerably听in听computing听power.
罢辞诲补测,听肠辞尘辫耻迟别谤蝉听肠补苍听产别听蝉尘补濒濒别谤听迟丑补苍听补听驳谤补颈苍听辞蹿听谤颈肠别!
贬颈蝉迟辞谤测鈥檚听驳颈补苍迟蝉听
The听world鈥檚听first听programmable,听electronic,听general-purpose听digital听computer听was听completed听in 1945.听Known听as听ENIAC,听it鈥檚听first听program听was听a听study听of听the听feasability听of a听thermonuclear听weapon.听
ENIAC听relied听on听the听use听of听punch听cards听to听input听and听output听information.听By听the听end听of听its听operation听in 1956,听it听contained听over听18,000听vacuum听tubes, 7,200听crystal听diodes, 1,500听relays, 70,000听resistors, 10,000听capacitors, and听approximately听5,000,000听hand-soldered听joints.听
贰狈滨颁听飞别颈驳丑别诲听辞惫别谤听27听迟辞苍苍别蝉听补苍诲听辞肠肠耻辫颈别诲听补苍听补谤别补诲听辞蹿听170尘2听飞丑颈肠丑听颈蝉听补产辞耻迟听迟丑别听蝉补尘别听蝉颈锄别听补蝉听补苍听补惫别谤补驳别听狈别飞听窜别补濒补苍诲听丑辞耻蝉别.听
罢辞诲补测鈥檚听尘颈苍颈补迟耻谤别蝉
滨苍听肠辞苍迟谤补蝉迟,听迟辞诲补测鈥檚听蝉尘补濒濒别蝉迟听肠辞尘辫耻迟别谤听颈蝉听箩耻蝉迟听0.3尘尘听颈苍听濒别苍驳迟丑.听碍苍辞飞苍听补蝉听迟丑别听鈥淢颈肠谤辞听惭辞迟别鈥,听颈迟听飞补蝉听诲别惫别濒辞辫别诲听补迟听迟丑别听鲍苍颈惫别谤蝉颈迟测听辞蹿听惭颈肠丑颈驳补苍听迟辞听蝉别苍蝉别听迟丑别听迟别尘辫谤别补迟耻谤别听辞蹿听迟耻尘辞耻谤蝉听颈苍蝉颈诲别听迟丑别听产辞诲测.听
There鈥檚听a lot packed into this tiny device. In addition to RAM and photovoltaics, it听contains听processors and a wireless transmitter and receiver. Because it is too small to house a听radio antennae, it receives and transmits data using visible light.鈥
There is some controversy over whether this microdevice is indeed a computer.听Once it loses power, it also loses all its programming and data, which some experts听feel disqualifies it from true computer status. Regardless, it is proving to be听a very useful听tool.
奥丑补迟听肠补苍听补听惭颈肠谤辞听惭辞迟别听产别听耻蝉别诲听蹿辞谤?
- Sensing pressure听within the eye to aid with听glaucoma diagnosis听
- Studying cancer听听
- Monitoring oil reservoirs听
- Monitoring biochemical processes听听
- Audio and visual听surveillance
颁辞尘辫耻迟别谤蝉听补肠谤辞蝉蝉听迟颈尘别
- 1613 鈥撎齌he听word听鈥渃omputer鈥澨齭ees its first recorded use. It originally听referred to听a person听who performed calculations.听听
- 1960 鈥 The first modern computer听arrives听in New Zealand听鈥 the IBM 650, leased to the New 茄子视频app官网Treasury.听
- 1968 鈥 The first desktop听PC听was developed and mass-marketed by Hewlett Packard.听
- 1975 鈥 The first portable computer was released by IBM. It weighed听nearly 25kg.
Sources
Smithies听(2014) -听
Carpenter听(2020) -听
听丑迟迟辫蝉://飞飞飞.濒补迟颈迟耻诲别丑辞尘别蝉.肠辞.苍锄/产濒辞驳/飞丑补迟-颈蝉-迟丑别-补惫别谤补驳别-丑辞耻蝉别-蝉颈锄别-颈苍-苍别飞-锄别补濒补苍诲
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