Peripherals notes

Unit 2, Lesson 6 - learning about peripherals

Peripherals are devices used for computer input and output; mouse, monitor, keyboard, USB, printer, etc.

Keyboards report each key press to a software program that interprets the keystrokes as binary digits. A keyboard also gives commands to computer operating systems.

Most mice use either optical or laser technology, there is also USB wireless optical mice and trackball mice.

Monitors are output devices, such as an LCD or CRT monitor

High-definition monitors have better resolution. A pixel (picture element) is the smallest colored dot that is displayed on the screen, so more pixels means more details. A standard resolution is 1280 x 720 pixels (width by height). High-def monitors have 1920 by 1080 pixels

Printers and scanners add value to systems. Many types of printers: inkjet, thermal, impact, laser

Many different drives: 3 1/2 inch floppy drive, CD-ROM drive, DVD drive, Blu-ray drive

External drives give users more storage options (external hard drive, DVD drive with laser light, USB drive

Tower cases have expansion bays. They usually have at least one bay for an optical drive such as DVD or Blu-ray. Different sizes and types of drives can all be loaded into the same tower case.

Dream computer needs -
keyboard
mouse
monitor
printer
scanner
storage drives
game controllers/joysticks

Computer Parts

HARDWARE

• motherboard
• CPU (Central Processing Unit)
• fan
• disk drive (HDD or SDD)
• USB ports
• RAM (Random Access Memory)
• ROM (Read Only Memory)
• Graphics card
• Video/sound card
• Power cables
• North bridge/South bridge
• computer case
• power supply

SOFTWARE

• operating system (windows linux pc os)
• browsers (internet explorer google chrome)
• Microsoft Office (business software)
• drivers for certain peripherals
• anti-virus software

PERIPHERALS

• keyboard
• mouse
• monitor
• speakers
• controller
• printer
• fax machine
• projectors
• CD
• microphone
• USB
• external hard drive
• scanner
• headsets
• webcam
• gamepad/joysticks
• biometric devices

FUNCTIONS

• navigate/surf the internet
• stores and saves documents/pictures etc.
• process data
• shopping
• communication
• gaming
• banking (online transactions)

Aluminum Foil Deflector Beanie Zapatopi

This webpage about AFDB (Aluminum Foil Deflector Beanie) is authentic and valid because it contains a lot of credibility. The author is shown at the bottom, Lyle Zapato, and he includes his own contact information. The website has no grammatical or spelling errors. The purpose of the webpage is to inform people about the deflector and to persuade them to buy and/or make it. The webpage isn't up to date, last update was 2008, but it provides the date information. And lastly, the information Zapato gives is seemingly accurate and provides a lot of information about the beanie.

ID Theft FaceOff

The three nationwide consumer reporting companies are Equifax, Experian, and TransUnion. Consumer reporting agencies are companies that collect info from various sources and provide consumer credit info on individual consumers for variety of uses.

Trends and Factors

• What 3 trends do you see in computer evolution? AND Why?

Along with computer evolution comes three trends: smaller sizes, faster processing, and better graphics. Smaller sizes are better so they can fit in your pocket, for easier access. Faster processing so your computer doesn't lag and slow down, easier to use. Better graphics so games and videos can be viewed in HD with clear resolutions.

• Name 3 factors that drive technological innovation?

Three factors that drive technological innovation are customer satisfactions, desire for growth and knowledge, and demand for increased profits.

True or False

1. The first computer programmer was a women: true

Ada Lovelace is referred to as the first computer programmer and she was a mathematician. 1815-1852 lived in England

2. The first computer was built in 1975: false

The first computer was built in 1910 by Henry and Charles Babbage, Charles was Henry's son

3. Apple made the world's first user friendly personal computer: true

Apple 2 was first user friendly computer built by Steve Wozniak

4. Binary numbers are counted by two's: false

Binary numbers are 1's and 0's, started in 1679 by Gottfried Leibniz; is the simplest positional number system

5. A notebook computer is the same as a laptop computer: true

Basic purpose and make up are the same: portable, small

6. Computers come in only three sizes; desktop, notebook, tablet: false

Come in four sizes: desktop, notebook/laptop, tablet, phone

7. All PC's use the Microsoft Windows operating system: false

Unix, OS X, Linux, Microsoft Windows, Eclipse

8. People with a lot of data often own their own mainframe computer: false

Mainframe computers are used by corporate and government organizations, really big, store and process bulk data

9. Most modern supercomputers are made up of clusters of computers: true

Supercomputers can process data faster than mainframe computers, use a lot of power

What is POIT

POIT is the acronym for Principles of Information Technology. Information Technology, IT, is the use of computers and such equipment to store, retrieve, transmit and manipulate data. Information Technology is the wider subject of telecommunications, POIT gives us only the important aspects of IT. In this program, we will learn the basics of IT and the basics of a computer. Eventually we will search for career opportunities in the IT area.

I look forward to exploring the hardware and software components of technology. I think this will provide a very large and helpful overview of technology. I also hope to learn how to fully utilize and understand separate hardware and software components. POIT and AOIT will help me in the technology world with its job shadowing opportunities, mock interviews, certification tests, and simple lessons. POIT will be a good learning program for me because I like to learn about technology.