Presentation on theme: "Computer Hardware Information Technology Week 5 and 6"— Presentation transcript:
1 Computer Hardware Information Technology Week 5 and 6
2 Essential Question(s) ObjectivesDiscuss how a computer uses binary codes to represent data in electronic formDescribe input and output devicesDescribe each of the major system unit componentsDistinguish between primary and secondary storageDescribe the different types of memoryEssential Question(s)Discuss expansion slots and boardsHow does a computer work?Discuss the four standard portsWhy are some computers more powerful than others?Define input and outputHow do you get information out?How do you recall information?
3 Class …..Take out your notes and be prepared to write down all the questions and answers presented in this Power Point Notes are worth 50 points and will be delivered over several days.
4 What Is a Computer? How is a computer defined? A programmable, usually electronic device, that can store, retrieve and process dataSome of the first computers were mechanical, then electro mechanical
14 The Components of a Computer What are two main components on the motherboard?Central Processing Unit (CPU)Also called a processorCarries out instructionsthat tell computer what to doMemoryTemporary holding place for dataand instructions
15 Central Processing Unit (CPU) What is….The part of the computer that holds data and program instructions for processing the data.Central Processing Unit (CPU)
16 What does….CPU stand for?Central Processing Unit
17 The communications media for the entire system including the CPU. What is….The communications media for the entire system including the CPU.motherboard
18 What is….Contained on chips connected to the system board and is a holding area for data instructions and information.memory
19 The Components of a Computer What is storage?Holds data, instructions, and information for future useStorage mediaPhysical material on which data, instructions, and information are storedStorage deviceRecords and retrieves items to and from a storage medium
20 The Components of a Computer What is a hard disk?Provides much greater storage capacity than a CD DriveHoused inside the system unitEnclosed disk drive containing one or more metallic discs.
21 The Components of a Computer What is a compact disc?Flat, round, portable metal discCD-ROMCD-RWCapacity: 673~768 MBDVD-ROMDVD+RWCapacity:4.7 ~ 17.1 GB
22 The Components of a Computer What is miniature storage media?Digital camerasPortable, thin memory cards used in:Handheld computerscell phones
23 Identify & list from least capacity to most capacity.
24 A tiny circuit board etched onto silicon. What is….A tiny circuit board etched onto silicon.chip
25 Computer Memory RAM ROM Forgets everything when the computer is turned off.Unable to change.RAM or ROM?RAM or ROM?RAMROM
26 Provides space for programs in use. What is….Provides space for programs in use.RAM
27 Provides instructions for starting the computer. What is….Provides instructions for starting the computer.ROM
28 How often a displayed image is updated or redrawn on the monitor. What is….How often a displayed image is updated or redrawn on the monitor.Refresh rate
29 Data sent to the computer. What is….Data sent to the computer.input
30 Input OR Output? Keyboard Monitor Printer Camera Scanner Tablet SpeakerTouch PadINOUT
31 Accessing information from storage. What is….Accessing information from storage.reading
32 A measurement in pixels or a monitor’s clarity. What is….A measurement in pixels or a monitor’s clarity.resolution
33 The amount of data that can be stored. What is….The amount of data that can be stored.capacity
34 Holds data and program instructions for processing data. What is….Holds data and program instructions for processing data.Primary storage
35 Storage that loses data when the computer turns off. What is….Storage that loses data when the computer turns off.volatile
36 What is….Permanent storage used to preserve programs and data and can be retained after the computer is turned off.Secondary storage