Computing Fundamentals

Unit 2, Part 2- Input, Output, & Peripherals

Identify & describe input devices Identify & describe output devices Connect input & output devices to a

computer Identify common peripherals

Objectives

Input Devices Allow data IN the

computer

Regular Ergonomic Wireless Flexible Virtual

Keyboard- Input

Mechanical Mouse (OLD)

Has a rubber ball under◦ Sensor detect movement

Must use mouse pad

Input Device- Mouse

Optical◦ LED on bottom◦ No mouse pad needed◦ Not good on glass

Laser◦ Laser light on bottom◦ No mouse pad needed◦ 20x better sensitivity

Wireless◦ USB Receiver◦ Optical or Laser

Input Device- Mouse

Voice Recognition- Input

Speak commands into PC & enter text Software must be installed Disabled people use

Are these input devices?

Capture still pics & videos◦ Point & shoot◦ DSLR

Pictures stored to media card◦ SD is most common

Transfer to computer

Digital Camera- Special Input

Lens/Zoom◦ Digital Zoom◦ Optical Zoom

Rechargeable Battery◦ NO ALKALINES!

Megapixels◦ Pixel= single dot◦ Mega= million◦ More= better prints

Touch screen

Wireless Transfer

Digital Camera Features

Bring in your digital camera Make a feature chart

Brand, Megapixels, Optical zoom, digital zoom, screen size, type of memory card, special features, type of battery

Project

Printers- Output Device

DPI◦ Dots per inch◦ More dots= better

quality◦ 4800 x 1200 (H x V)

PPM◦ Pages per minute◦ Black & Color speeds

Color is slower

Dot Matrix Printer- OLD

Dot Matrix◦ Pins hammer into ink

ribbon◦ Connected paper with

guide holes◦ Not good quality◦ Slow & noisy

Nozzles spray liquid ink

Very good quality Quiet Fast Inexpensive

Inkjet Printers

Laser inside Toner is a powder

◦ Thousands of pages from toner

Very fast printing B&W or color

◦ 4 color toners (CMYK)

Laser Printer

Other Printers All-In-One

◦ Print, copy, scan Some have fax too

◦ Inkjet & laser

Photo Printer◦ Small◦ 4 x 6 glossy

Plotter◦ Large paper◦ Drafting, posters

More About Printers

How they connect◦ Wired- USB or network◦ Wireless

Print from any PC, phone, tablet

Make money from ink & toner◦ Printer: $50◦ Ink Cost: $6

Price You Pay: $20-$30

Get your printer brand & model #

Look up:◦ Inkjet or Laser◦ All-in-one or not◦ dpi◦ ppm (black & color)◦ Connections◦ Ink or toner cost◦ Cost of printer◦ Cost of a ream of paper◦ Cost of a 3’ USB cable◦ Cost of 8 x 10 photo paper

Your Printer

Output Devices

Data comes OUT of the computer

Name some

Monitors Video card in case

sends images to monitor

CRT◦ Big & bulky

LCD & LED◦ Thin, flat-panel◦ Less energy

Connect w/ video cable & power

Front of Case

PC Connections

PS/2 Ports

Purple◦Keyboard

Green◦Mouse

Both 6 pin female

Video Display Ports VGA

◦Blue◦15 pin female◦Video only,

analog

HDMI◦Digital HD video

& audio through one cable

Transfer data & electricity

Plug and play (PnP)◦ “Hot swappable”

High speed◦ 2.0- fast; 10

songs/sec.◦ 3.0- faster; 100

songs/sec.

USB Ports

NIC or Ethernet

Connect to network

Use an Ethernet Cable or Network Cable

Network Port

Parallel◦ 25 port female◦ IEEE 1284◦ Old Printers

Parallel & Serial Serial

◦ 9 port male◦ RS-232◦ Old modems & mice

Parallel

Parallel & Serial Devices

Serial

Modem RJ11 Phone/Line Jacks 56kbps

Modem

Audio Ports Line In

◦Audio into PC◦Record Player to

PC

Line Out◦ Headphone◦ Speakers

Microphone

Bring in Laptop or Take picture of laptop/desktop ports◦ Laptop- all sides

Print in class & label

View & connect wires to class PC’s

Practice connecting wires

Ports on Your Computer

Which video port sends HD audio & video through one cable?◦ HDMI

What common port transfers data and can charge your cell phone?◦ USB

How many pins is the old keyboard & mouse ports?◦ 6 pin female

The VGA port is what color and how many pins?◦ Blue, 15 pin female

Review

Which port would you connect to get access to a network?◦ Ethernet

Joe wants to convert his old records to CD’s. Which port can you plug his record player into?◦ Line In

Which port is a common plug and play one?◦ USB

Review

PC Connections

Practice Connecting Cables

Handout◦ What port would you connect the device to?

Review 1

Other Ports S-video HDMI DVI Firewire

Review Which part of the computer performs

calculations and controls processes?◦ CPU

What is it called when people can speak into a PC and have it perform those commands?◦ Voice recognition

Which type of memory is volatile?◦ RAM

Review Which software translates speech into text?

◦ Voice recognition What is the name of the path that data

travels on a motherboard?◦ Bus

Which type of storage device has no moving parts?◦ Flash/USB drive

Computing Fundamentals

Unit 2, Part 2- Input, Output, & Peripherals