Transcript Presentation on devices

ICT PROJECT
on Devices:
Represent
CHIP
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Chip?
"Chip" is short for microchip, the incredibly
complex yet tiny modules that store computer
memory or provide logic circuitry for
microprocessors. Perhaps the best known chips are
the Pentiummicroprocessors from Intel.
The PowerPC microprocessor, developed by Apple,
Motorola, and IBM, is used in Macintosh personal
computers and some workstations.
AMD and Cyrix also make popular microprocessor
chips.
A chip is manufactured from a silicon wafer, which
is first cut to size and then etched with circuits
and electronic devices. The electronic devices use
complementary metal-oxide semiconductor
technology. The current stage of micro-integration
is known as Very Large-Scale Integration (VLSI). A
chip is also sometimes called an IC or integrated
circuit.
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Next
BAR
CODE
What
Is Bar
Code?
A barcode is an optical machine-readable
representation of data, which shows certain datas on on
certain products. Originally, barcodes represented data
in the widths (lines) and the spacings of parallel lines,
and may be referred to as linear or 1D (1 dimensional)
barcodes or symbologies
Although 2D systems use symbols other than bars, they are generally
referred to as barcodes as well. Barcodes can be read by optical
scanners called barcode readers, or scanned from an image by special
software.
Anatomy of a Barcode
Manufacturer Code
Number System
Product Code
3 Gruard Bars
Check Digit
Character
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Information
DVD ROM
The DVD-ROM specification supports disks with
capacities of from 4.7GB to 17GB and access rates
of 600 KBps to 1.3 MBps. One of the best features
of DVD-ROM drives is that they are backwardcompatible with CD-ROMs. This means that DVDROM players can play old CD-ROMs, CD-I disks,
and video CDs, as well as new DVD-ROMs. Newer
DVD players can also read CD-R disks.
Next
DVD ROM
SYSTEM
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FLOPPY
DISK
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FLOPPY DISK
•A floppy disk is a data
storage medium that is
composed of a disk of thin,
flexible ("floppy") magnetic
storage medium encased in
a square or rectangular
plastic shell.
PART OF FLOPPY DISK
Part Of
Floppy disk
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LASER PRINTER
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LASER PRINTER
A laser printer is a common type of
computer printer that rapidly
produces high quality text and
graphics on plain paper. As with
digital photocopiers and multifunction
printers(MFPs), laser printers employ
a xerographic printing process but
differ from analog photocopiers in
that the image is produced by the
direct scanning of a laser beam across
the printer's photoreceptor.
LASER PRINTER
Hard Disk
How hard
Disk work?
• A hard disk drive (often shortened as hard disk,[ hard drive, or
HDD) is a non-volatile storage device that stores digitally encoded
data on rapidly rotating platters with magnetic surfaces. Strictly
speaking, "drive" refers to the motorized mechanical aspect that is
distinct from its medium, such as a tape drive and its tape, or a
floppy disk drive and its floppy disk. Early HDDs had removable
media; however, an HDD today is typically a sealed unit (except for
a filtered vent hole to equalize air pressure) with fixed media
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ZIP DISK
A zip disk is a computer hardware device that stores
data. A zip disk drive is somewhat like floppy disk
drive, only that the size of disks inserted into the
devices are different. Where a normal floppy disk
can hold about 1.44 megabytes of data, a zip disk
can hold around 100 megabytes of data. This means
that a zip disk can hold a lot more data which is
useful in today's computer market where software
applications and files are becoming bigger. Files
such as mp3 music files usually need to saved on 2
or more floppy disks whereas a zip disks can hold
numerous mp3 files.
PIN PAD
PIN PAD
• PINpad is an electronic device used in a debit or smart cardbased transaction to input and encrypt the cardholder's PIN.
PINpads are normally used with integrated point of sale devices
in which the Electronic Cash Register (ECR) machine is
responsible for taking the sale amount and initiating/handling
the transaction. The PINpad is required so that the customer
card can be accessed (in the case of chip cards and the PIN can
be securely entered and encrypted before it is sent upstream to
the transaction manager of the switch or the bank. In some
cases, with chip cards, the PIN is only transferred from the
PINpad to the chip (within the PINpad itself) and it is verified
by the chip card. In this case the PIN does not need to be sent
to the bank or card scheme for verification
CD-ROM
CD-Rom is a pre-pressed compact disc that
contains data accessible to, but not writable by, a
computer for data storage and music
playbackCD-ROMs are popularly used to
distribute computer software, including games
and multimedia applications, though any data
can be stored (up to the capacity limit of a disc).
Some CDs hold both computer data and audio
with the latter capable of being played on a CD
player, while data (such as software or digital
video) is only usable on a computer
Graph plotter
A graphics printer that
draws images with ink
pens. It actually draws
point-to-point lines directly
from vector graphics files.
The plotter was the first
computer output device
that could print graphics
as well as accommodate
full-size engineering and
architectural drawings.
Using different colored
pens, it was also able to
print in color long before
inkjet printers became an
alternative.
The Memory Stick digital data storage
is designed to become a standard
storage and transfer media. It is
smaller than a stick of chewing gum,
yet the 8MB Memory Stick has a minimum
of five times the storage capacity of a
standard 3.5 inch floppy disk. It is
available in 4MB, 8MB, 16MB, 32MB, 64MB,
and 128MB storage sizes and as a kit
with a PC card adapter. Due to its
compact design, it is best suited for use
in small digital electronics products
Times New “Magnetic Tape”.
• Magnetic tape is a medium for magnetic recording generally
consisting
thin magnetizable
coatinggenerally
on a long
and narrow
Magnetic
tapeof
is aamedium
for magnetic recording
consisting
of a
strip of plastic. Nearly all recording tape is of this type, whether
thin
magnetizable
coating
on a long
and narrow
of plastic.
Nearly
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used
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It was tape
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