Computer Fundamentals/ Organizing Your Work/ 1 of 16

Computer Fundamentals/ Organizing Your Work/ 2 of 16 Session Objectives Explaining Input and Output Devices Describing Memory - Discussing types of memory Describing Storage devices - Discussing types of storage devices - Functionality of storage devices Discuss File Management

Computer Fundamentals/ Organizing Your Work/ 3 of 16 Monitor Display/Screen CD Drive Printer JoystickMouse Keyboard Console Unit Floppy Drive Speaker A Computer

Computer Fundamentals/ Organizing Your Work/ 4 of 16 Input Devices Devices that are used to give instructions to the computer are known as Input Devices. Some common input devices are : Keyboard Primary input device Mouse Pointing Device OCR Converts scanned images of machine printed or handwritten text, into a computer processable format Scanner digitize texts, graphics and pictures to restore damaged photographs

Computer Fundamentals/ Organizing Your Work/ 5 of 16 Output Devices Monitors Primary Output Device Uses Cathode Ray Tube technology as in televisions VGA or SVGA monitor Devices that are used to view information or processed data are known as Output Devices. Some common output devices are :

Computer Fundamentals/ Organizing Your Work/ 6 of 16 Liquid Crystal Display Thinner and Lighter monitors Require less power than CRT monitors Output Devices Devices that are used to view information or processed data are known as Output Devices. Some common output devices are :

Computer Fundamentals/ Organizing Your Work/ 7 of 16 Printers Another most commonly used output device. Basically of 2 types - Impact - Non Impact Some common output devices are : Output Devices Devices that are used to view information or processed data are known as Output Devices.

Computer Fundamentals/ Organizing Your Work/ 8 of 16 Output Devices Speakers Used for programs that support sound. Speakers are attached to a sound card. Devices that are used to view information or processed data are known as Output Devices. Some common output devices are :

Computer Fundamentals/ Organizing Your Work/ 9 of 16 Memory Memory is a measure of an individual’s capacity to remember. Memory is basically of two types : Primary Memory : Primary memory is used for storing data and instructions temporarily. Secondary Memory : Secondary memory comprises of storage devices such as hard disks and floppy disks that act as a permanent storage medium.

Computer Fundamentals/ Organizing Your Work/ 10 of 16 Primary Memory Primary memory is of two types : Random Access Memory : This is a computer’s primary storage area, used to store and retrieve information that is passed to the CPU for processing. The type of RAM affects performance, as the information stored here has to be refreshed quite a few times per second by the processor.

Computer Fundamentals/ Organizing Your Work/ 11 of 16 Primary Memory Primary memory is of two types : Read Only Memory : It is an integrated circuit chip containing programs and data that can be accessed and read but cannot be modified. Non Volatile random access storage is the read only memory (ROM).

Computer Fundamentals/ Organizing Your Work/ 12 of 16 Storage Devices – Secondary Memory Hard Disks Hard disks are the main storage media of a computer. The hard disk is placed inside the CPU and is referred to as a fixed storage medium.

Computer Fundamentals/ Organizing Your Work/ 13 of 16 Floppy Disks Floppy disks are removable storage media. A floppy consists of thin plastic disk that is coated with a magnetic substance. Storage Devices – Secondary Memory

Computer Fundamentals/ Organizing Your Work/ 14 of 16 Storage Devices – Secondary Memory CD – ROM CD – ROM stands for Compact Disc – Read Only Memory

Computer Fundamentals/ Organizing Your Work/ 15 of 16 Memory Measurement Computer memory can be measured in bits and bytes. 8 bits -1 byte 1024 bytes -1 Kilobyte 1024 Kilobytes -1 Megabyte 1024 Megabytes -1 Gigabyte

Computer Fundamentals/ Organizing Your Work/ 16 of 16 File Management Folder is a location where we can store a set of related files. File is a collection of data or information. A text file can be created using Notepad. A picture can be created using Paint.