ELECTRONIC
WORKSHOP
 The point at which a peripheral
attaches to.
 Communicates with a system unit so
that the peripheral can send data to or
receive information from the computer.
 External devices often attaches by a cable to a port on
the system unit.
 The term JACK is sometimes is used to identify audio
and video ports.
 The front and back of system unit on desktop personal
computer contain many ports.
 The ports of notebook computers including netbook
and Tablet PCs are on the back , front and sides.
 Joins a cable and a port.
 A connector at one end of the a cable attaches to a port
on the system unit.
 A connector at the other end of the cable attaches to a
port on the peripheral.
Male
 Have one or more
exposed pins (end of
an electrical cord).
Female
 Have matching
holes to accept the
pins on a male
connector or ports
(electrical wall
outlet).
• Gender changer is a device that enables
to join a port and a connector that are both
female or both male.
 Universal serial bus port
 Connect to up 127 different peripherals together with a
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single connector.
USB 2.0 (Hi-Speed USB) more advanced and faster than
USB.
USB 3.0.
USB 2.0 & USB 3.0 are backward compatible (they
support older USB devices as well as USB 2.0 & USB 3.0)
To attach multiple peripherals using a single USB port, can
use USB Hub.
 A device that plugs in a USB port on the system unit.
 Contains multiple USB ports in which can plug cables from
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USB devices.
Self-powered or bus-powered
Self-powered USB hub draws power from an electrical
outlets whereas bus-powered USB hub draws power from
USB bus in the computer.
Wireless USB hub is a receiver plugs into a USB port on the
computer and it communicates wirelessly with the receiver.
USB supports hot plugging and Plug and Play (attach
peripherals while the computer is running)
 IEEE 1394 port
 Connect multiple types of devices that require faster
data transmission speeds.
 The three latest version (FireWire 800, FireWire 1600
and FireWire 3200 ) have speeds faster than the
original FireWire 400.
 Use FireWire hub to attach multiple devices to a single
FireWire port.
 Supports Plug and Play.
 Bluetooth technology uses radio waves to transmit data
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between two devices.
Have to be within about 33 feet to each other.
Contain a small chip that allows them to communicate
with other Bluetooth-enabled computers or devices.
Bluetooth headsets allow smart phone users to connect
their telephone to a headset wirelessly.
Bluetooth wireless port adapter that will convert an
existing USB port into a Bluetooth port.
Bluetooth PC cards and ExpressCard modules (traditional
notebook computers and Tablets PCs).
Bluetooth cards (smart phones and PDAs).
 A special high-speed parallel port.
 Allows to attach SCSI peripherals (disk drivers and
printers).
 SAS (serial-attached SCSI) transmits at mush faster
speeds than parallel SCSI.
 For small computer system interference can daisy
chain up to either 7 to 15 devices together.
 The printer connects to
your computer with a
Parallel connector.
This connector has 25
pins.
 Parallel means the
device is capable of
receiving more than
one bit at a time (that
is, it receives several
bits in parallel).
 The PS/2 connector are
use for connecting
keyboard and mouse
on the modern PCs.
The PS2 mouse
connector and port is
usually green in colour
to distinguish it from
the PS2 keyboard,
which is purple.
 A type of interface that connects a device to the system
unit by transmitting data one bit at a time.
 Some modems that connect the system unit to a
telephone lines use a serial port because the telephone
line expects the data in a specific frequency.
 A Video Graphics Array
(VGA) connector is a
three-row 15-pin DE-15
connector. The 15-pin VGA
connector is found on
many video cards,
computer monitors, and
high definition television
sets. On laptop computers
or other small devices, a
mini-VGA port is
sometimes used in place of
the full-sized VGA
connector.
 LAN or (Local Area
Network) uses a CAT5
cable and a RJ45
connection. The CAT 5
cable is also called the
Ethernet Cable.
 Network connection
generally uses a 10/100
Mbps speed. This means
it has two different
speeds 10 Mbps and 100
Mbps.
 Musical Instrument Digital Interface.
 The electronic music industry’s standard that defines
how devices (sound cards and synthesizers) represent
sound electronically.
 A special type of serial port that connects the system
unit to a musical instrument. (electronic keyboard).
 A synthesizers can be a peripheral or a chip, creates
sound from digital instructions.
 Has the capability of recording sounds that have been
created by a synthesizer and then processing the
sounds (the data) to create new sounds.
 External Series Advanced Technology Attachment.
 Allows to connect an external SATA hard disk to a
computer.
 SATA hard disks are popular because of their fast data
transmission speeds.
 Connections provide up to 6times faster data
transmission speeds than external hard disks attached
to a computer’s USB or FireWire port.
 Infrared Data Association.
 Transmit data via infrared light waves.
 For these wireless device, to transmit signals to a
computer, both the computer and the device must
have an IrDA port.
 Align the IrDA port on the device with the IrDA port
on the computer.
 Example : smart phone, PDA, keyboard, mouse and
printer.
 Several of these devices use a high-speed IrDA port,
sometimes called a fast infrared port.
 Figure shows a common
type of 230 VAC
receptacle used to
connect the power cord
to things such as
personal computers and
test equipment.
 These are used with UTP (unshielded twisted pair)
cables. Figure shows an RJ11 connector commonly
used with 4-wire telephone cables. An RJ12 connector
is the same size but used with 6-wire cable. RJ45
connector is of different size & used with 8-wire local
area network (LAN) cables.
 Figure 1 shows what is
commonly called an
"RCA" plug and jack.
They are two-conductor
connectors typically used
with shielded cable.
They are used in
applications such as
connecting microphones
and small speakers to
audio amplifiers.
 Figure 2 shows a
"phone" (old telephone
type) or "phono" plug
and jack. They can be
two or three conductor
connectors used for one
(mono) or two (stereo)
audio signals carried on a
shielded cable. There are
several other types of
connectors used for
audio signals.
 The BNC connector is a miniature quick connect
/disconnect RF connector used for coaxial cable. It features
two bayonet lugs on the female connector; mating is
achieved with only a quarter turn of the coupling nut.
BNCs are ideally suited for cable termination for miniatureto-subminiature coaxial cable (e.g., RG-58, 59, to RG-179,
RG-316).BNC connectors are made to match the
characteristic impedance of cable at either 50 ohms or 75
ohms.
 Like the BNC connector,
it is used on coaxial
cables carrying RF
signals. It can be used on
thicker cable such as
RG8. A UHF connector is
threaded to screw onto
the receptacle.