COMP LIT FALL SEMESTER

INPUT UNIT

GET OUT YOUR NOTEBOOKS AND PENS!

NO SLEEPING, NO EATING, NO TALKING!

LISTEN, LOOK, AND THINK.

TAKE NOTES & ASK QUESTIONS.

YOU WILL SEE THIS MATERIAL AGAIN!

GET OUT YOUR NOTEBOOKS AND PENS!

NO SLEEPING, NO EATING, NO TALKING!

LISTEN, LOOK, AND THINK.

TAKE NOTES & ASK QUESTIONS.

YOU WILL SEE THIS MATERIAL AGAIN!

DO NOT SIT THERE AND NOT UNDERSTAND!

SOME OF THIS STUFF MIGHT SEEM A LTTLE WIERD AND CONFUSING.

IF IT IS YOU MUST TELL ME! DO NOT BE EMBARRASED. I WILL EXPLAIN IT

SO YOU CAN UNDERSTAND.

IS EVERYBODY ON BOARD?

DO NOT SIT THERE AND NOT UNDERSTAND!

SOME OF THIS STUFF MIGHT SEEM A LTTLE WIERD AND CONFUSING.

IF IT IS YOU MUST TELL ME! DO NOT BE EMBARRASED. I WILL EXPLAIN IT

SO YOU CAN UNDERSTAND.

IS EVERYBODY ON BOARD?

REMEMBER…

IF YOU SEE IT ON THE BOARD OR THE COMPUTER IT SHOULD BE IN

YOUR NOTES!

YOU WILL SEE THIS MATERIAL AGAIN!

ALL WORK DONE ON TIME AND TURNED IN ON TIME!

REMEMBER…

IF YOU SEE IT ON THE BOARD OR THE COMPUTER IT SHOULD BE IN

YOUR NOTES!

YOU WILL SEE THIS MATERIAL AGAIN!

ALL WORK DONE ON TIME AND TURNED IN ON TIME!

Once again: If you don’t “get it”

then you must either…

1. Say so or2. Ask a question

Once again: If you don’t “get it”

then you must either…

1. Say so or2. Ask a question

NEVER BE AFRAID OR EMBARASSED TO ASK

A QUESTION!

ASKING QUESTION ABOUT WHAT

YOU DON’T KNOW OR UNDERSTAND

IS HOW YOU LEARN. DON’T WORRY

ABOUT WHAT OTHERS THINK OR

THINK THEY KNOW. THAT DOESN’T

HELP YOU.

NEVER BE AFRAID OR EMBARASSED TO ASK

A QUESTION!

ASKING QUESTION ABOUT WHAT

YOU DON’T KNOW OR UNDERSTAND

IS HOW YOU LEARN. DON’T WORRY

ABOUT WHAT OTHERS THINK OR

THINK THEY KNOW. THAT DOESN’T

HELP YOU.

I/O and BIOS

I/O stands for

Input/Output

BIOS stands for

Basic Input/Output System

In computing, input/output, or I/O,

refers to the communication

between an a computer, and the

outside world.

Inputs are the signals or data sent

to the system.

Outputs are the signals or data

sent by the system to the outside.

The first unit we cover is the one you use every time you do something on the computer…

The first unit we cover is the one you use every time you do something on the computer…

THE THE

UNITUNIT

The INPUT UNIT

of the computer

accepts information.

It allows a user to put

information into the computer

by using input devices.

An input device is any peripheral

(piece of computer hardware

equipment) used to provide data

and control signals to an

information processing system

(such as a computer).

USER

The person who uses the computer

or the programs and software.

Those pieces of input and output

equipment are called

PERIPHERALS .

PERIPHERALS

Equipment that is not part of the

central computer but are attached

to and work with the central

computer.

Input and output devices make up

the hardware interface between a

computer and the user or outside

world.

Just one “heads up”, word of caution

or word of warning to you about

INPUT and OUTPUT devices.

Some devices are INPUT ONLY

Some devices are OUTPUT ONLY

Just one “heads up”, word of caution

or word of warning to you about

INPUT and OUTPUT devices.

Some devices are INPUT ONLY

Some devices are OUTPUT ONLYBut

There are some devices that can

act like or be used as both

INPUT and OUTPUT

But

There are some devices that can

act like or be used as both

INPUT and OUTPUT

DEVICES OR EQUIPMENT

THAT CAN ONLY BE USED TO

INPUT INFORMATION

DEVICE

A mechanical invention or

contrivance for some specific

purpose.

A human interface devices is a type

of computer device that interacts

directly with humans, takes input

from humans and allows them to

communicate with computers.

HUMAN INTERFACE DEVICE

Common Human Interface Devices

Keyboard Graphics tablet

Mouse Joystick

Trackball Gamepad

Touchpad Pointing stick

Less Common

Human Interface Devices

Driving simulator devices and

Flight simulator devices have HIDs such as gear sticks, steering

wheels and pedals.

Nintendo Power Glove

Dance pad Wii Remote

You should remember that these

are devices that are used only to

put information into the computer.

They are not used for output.

Many of them are not used with the PC’s,

laptops, notebooks or home computers

most people have and use.

You should remember that these

are devices that are used only to

put information into the computer.

They are not used for output.

Many of them are not used with the PC’s,

laptops, notebooks or home computers

most people have and use.

Early input devices

Unit record equipment

Punched card

Keyboards

Computer keyboard

Keyer

Chorded keyboard

LPFK

Keyer Chorded Keyboard LPFK

Pointing devices

Mouse

Touch screen

Joystick

Pointing stick

Touch pad

Trackball

Mouse

Touch screen Joystick

Pointing stick Touch pad Trackball

High degree of freedom input devices

Wired glove

Fiber optic sensors

Magnetic or ultrasonic motion

tracking

3D or 6D Mice

Wired glove

Fiber optic sensor

Magnetic/Ultrasonic motion tracking

3D/6D mouse

Composite devices

Game controller

Gamepad

Paddle

Wii remote

Game controller

Gamepad Paddles Wii remote

Imaging and Video input devices

Webcam

Image scanner

Fingerprint scanner

Barcode reader

3D scanner

Laser rangefinder

Webcam Image scannerFingerprint scanner

Bar code reader

3D scanner

Laser rangefinder

More input devices…

Light pen

Graphics tablet

Optical mark reader

Magnetic ink character

recognition

Lightpen

Graphics tablet

Optical mark reader

Magnetic ink character

recognition

Medical imaging

Computerized Tomography

Magnetic Resonance Imaging

Positron Emission Tomography

Medical Ultrasonography

Ultrasound

MRI

CAT

PET

The information on certain types

of CD’s and DVD’s can only be

read by the computer. You can’t

change anything, write or save on

them. The disk drive can be used

for both input and output but the

CD or DVD itself is input only.

NOTE

CAN YOU THINK

OF ANY OTHERS?

CAN YOU THINK

OF ANY OTHERS?

REMEMBER:

YOU WILL SEE THIS MATERIAL AGAIN!

MAKE SURE IT’S IN YOUR NOTES AND THAT

YOU KNOW IT AND UNDERSTAND IT.

REMEMBER:

YOU WILL SEE THIS MATERIAL AGAIN!

MAKE SURE IT’S IN YOUR NOTES AND THAT

YOU KNOW IT AND UNDERSTAND IT.

REMEMBER…

ALL HOMEWORK DONE ON TIME

AND TURNED IN ON TIME!

REMEMBER…

ALL HOMEWORK DONE ON TIME

AND TURNED IN ON TIME!

DONE MEANS THE WHOLE THING

ON TIME MEANS THE NEXT DAY

NO EXCUSES

DONE MEANS THE WHOLE THING

ON TIME MEANS THE NEXT DAY

NO EXCUSES