Classifying & evaluating computers Unit 4 5-8 days including projects, review, and test.

Objectives Identify types of personal computers Describe desktop computers Compare laptops and tablets Evaluate smartphones Describe servers and other large computers

Preparing to Purchase a Computer Categories of PCs; What do you need to do? Basic Internet, email, Office docs Intermediate Games, video, shopping, Office, design Advanced Need max everything Graphic intensive, online gaming, editing video What’s your budget?

Evaluating Components Component or Feature Description Measured In What Do You Want? Fast CPU Speed GHz Memory Capacity Amount of RAM GB Storage Capacity Amount of data you can store GB or TB Storage Speed Read/write access time RPM Edit & distribute HD movies Optical drive DVD-RW or BD-RE Display Size and Type of Screen Diagonal inches

Desktop Computer Personal computer- PC or MAC Individual user Come in case/monitor or all-in-one Case is also known as a tower. Desktop remains stationary. Easy to open & upgrade. Typical price is around $400-$1200. All-in-ones with a touchscreen can be around $800.

Laptop/Notebook PC or Mac Portability/Battery Touchpad or Pointing Device 2-in-1 laptop/tablet May or may not have optical drive Power is comparable/equal to desktops. “Greener” than desktops because of power saving features Difficult to replace parts compared to desktop Shorter life span than a desktop (mostly because of the battery) LOOK UP PRICES in weekly ad: Range from $300-$2000.

Chromebook Laptop running Google’s Chrome OS Fast boot Apps instead of software Cloud-based storage Use while connected to Internet

Tablets PC in smaller size Many functions of PC Has memory, storage, CPU, touchscreen Apps, Internet, Email Android, iOS, Windows Choice of WiFi only or Cellular/WiFi Cell version more expensive & needs data plan Can use a stylus. A tablet cannot connect to an Ethernet network.

Comparing Laptops & Tablets Feature Laptop Tablet Input Devices Battery Life Storage Capacity Performance Physical Size Price Have students decide which is better. Use check marks. Discuss why.

Smartphones Many features of a computer Install & use apps Internet, camera, music, GPS, phone, email, text Install & use apps Touchscreen or keyboard Windows, iOS, Android Discuss what to look for in a smartphone: Touchscreen or physical keyboard, battery life, storage capacity, RAM, size/screen size, price

Other Mobile Devices E-book reader Portable music player Handheld game device Embedded Oss here

Activity In groups of 2, find a unique device for an iPad

Workstation Multiple CPUs, lots of RAM, multiple, high-capacity drives Video Editing, CAD, Animation, Scientific, CSI, X-Ray

Server Performs functions for computers on a network Provides a service Hold Files Handle Email Web Site Runs Network OS Windows Server, Mac OS X server, Linux Server Highly reliable & very powerful Tower, rack & blade servers (not pictured)

Mainframe Connected to thin clients/PC’s Huge amounts of data processing Process payroll & billing in large companies Hundreds of thousands $ Large institutions & govt. Airline flight scheduling Process payroll & billing for large corporations, handling millions of credit card transactions, gathering & tabulating census info for the government, scheduling flights for an airline. Kept in secure, climate-controlled rooms.

Supercomputers Large & fast Perform BIG calc’s Volumes of data Millions of $$$ Government Military Research Labs NASA Can have millions of cores of processors.

Review- 4Q Managing an airline reservation & ticketing system would be best performed by which class of computer? Mainframe Which device would animators use to make CG effects for a movie? Workstation What is the fastest type of computer? Supercomputer Appliances have what kind of computer? Embedded

Review- 4Q What’s the biggest advantage of using a notebook? Portability T/F. A server is dedicated to sharing resources & data. True Which type of computer provides services to other PCs? Servers What device would have Android OS on it? Smartphone or Tablet

Activities Project 1 Project 2 In groups of 3 or 4, compare smartphones Make a table to include the data Include a picture of each phone Project 2 Buy a computer Individual project

Classifying & evaluating computers Unit 4 5-8 days including projects, review, and test.