01 Intro Hardware

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The first computers

Scales computed relative weight of two items Computed if the first items weight was less than,

equal to, or greater than the second items weight

Abacus performed mathematical computations Primarily thought of as Chinese, but also Japanese,

Mayan, Russian, and Roman versions Can do square roots and cube roots


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Computer Size

ENIAC then

ENIAC today


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Computer Organization

Input Devices

Central Processing Unit

Memory

Output Devices


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Computer advertisement specification Intel Pentium 4 Processor

at 3.06GH z with 51 2K cache 51 2 MB DDR SDRAM 200G B ATA-1 00 H ard Drive

(7 200 RPM, 9 .0 ms seek time) 17 LCD Monitor 64 MB NVIDIA G eForce 4

MX G raphics Card 1 6x Ma x DVD-ROM Drive 48x/24x/48x CD-RW Drive 5 6K PCI Telephony Modem Windows XP H ome Edition

1 0/ 100 Fast Ethernet Network Card


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3.06 billion operations

per second


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512 million bytes of memory that can be

transferred at doublethe normal rate

A byte is 8 bits

A bit is a 0 or a 1


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S tores 2 00 billion

bytes of data. Youwant high RPM and

low seek time.0.009 seconds is

average


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17 on the diagonal.

Resolution up to1,2 80 by 1, 0 24

pixels


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Microprocessor for

displaying images with6 4 million bytes of

memory. More memorysupports more colorsand higher resolution


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Reads DVDs 1 6 times

faster than a basic DVDdrive. Can hold up to8 billion bytes of data


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Can read and write

CDs. Can hold 6 5 0million bytes of data

Reads at 4 8 timesfaster and writes

24 times faster thana basic drive


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Can send or receive

up to 5 6 thousandbits per second







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Computer operating

system using agraphical interface







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Can send or receive

data at two rates 1 0 or 1 00 million bytes

per second






01 Intro Hardware

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