history of computers Flashcards

1
Q

what does a hard drive hold?

A

long term memory

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2
Q

what are cores?

A

the number of processors on each chip (cpu)

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3
Q

gigahertz

A

billions of processes per second

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4
Q

tera

A

trillion

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5
Q

byte

A

basically letter on keyboard

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6
Q

rpm

A

rotations per minute

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7
Q

rpm rates

A

5400, 7200, 10000, 15000

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8
Q

do solid state drives (ssd) have moving parts?

A

no

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9
Q

what drives are much faster?

A

ssd

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10
Q

if you were to purchase a hard drive, what is the minimum ssd?

A

1 terabyte

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11
Q

what is ram?

A

short term memory

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12
Q

giga

A

billion

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13
Q

types of ram

A

ddr, ddr2, ddr3, ddr4, ddr5

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14
Q

what does ddr stand for?

A

double data rate

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15
Q

what is ram speed measured in?

A

megahertz

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16
Q

mega

A

millions

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17
Q

hertz

A

number of times per second

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18
Q

what is the minimum amount of ram to purchase?

A

8 gigabytes of ddr4

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19
Q

what are the two videocard brands?

A

ati and nvidia

20
Q

what is gpu

A

graphics processor

21
Q

what is video memory measured in?

A

megabytes

22
Q

what is the minimum for a video card and brand to purchase?

A

4 gigabytes and either brand

23
Q

what are the types of lcd monitors

A

fluorescent backgrounds
led backlights

24
Q

what is the screen resolution for a monitor?

A

1024 x 768
1920 x 1280

25
Q

what are the most common refresh speeds for monitors?

A

2ms, 3ms, and 5ms

26
Q

what is the monitor contrast ratio?

A

10000:1

27
Q

who is the “father of computing”?

A

charles babbage

28
Q

who built the “differential engine”?

A

charles babbage

29
Q

who invented the computer compiler?

A

dr. grace hopper

30
Q

who found the first computer bug?
what was it?

A

dr. grace hopper
a moth

31
Q

what computer used vacuum tubes to process info?

A

first generation

32
Q

what computer used vacuum tubes to process info?

A

first generation

33
Q

what computer stored info with a magnetic drum?

A

first generation

34
Q

what computer processed info with transistors?

A

second generation

35
Q

what computer stored info with magnetic tape?

A

second generation

36
Q

what computer processed info with integrated circuits?

A

third generation

37
Q

what computer stored info with a magnetic disk storage?

A

third generation

38
Q

who created the apple II?

A

steve jobs and steve wozniak

39
Q

who invented the first microprocessor?
in what year?

A

ted hoff
1969

40
Q

who was a co-founder of microsoft?

A

bill gates

41
Q

what computer kit was a box of parts for users to put together themselves?

A

altair

42
Q

what could do virtually nothing and yet sold thousands?
why?

A

altair
because it was the first time you could own your own computer

43
Q

what did the altair have?
what did it lack?

A

had only keys and switches
lacked monitor, keyboard, printer, and mouse

44
Q

what did sir tim berners lee invent?
when?

A

world wide web
1998

45
Q

who wrote the first software for the first web browser and server?

A

sir tim berners lee