Unit I Computer Basics swisherc [licensed for noncommercial 单位计算机基础swisherc [许可用于非商业.pptVIP

02.01 6511 Keyboarding 02.00 Understand Computer Fundamentals Unit Objective: 02.01 What Is A Computer? An electronic device that receives data, processes data, stores data, and produces a result (output). Classified by size, speed and application Uses hardware and software Comes in different types Types of Personal Computers Desktop computer: designed to be used on a desktop. Notebook/Tablet computer: designed to be used on a desktop but still small enough to be portable. Laptop computer: designed to be small enough and light enough to be used on your lap. Hardware The tangible, physical equipment that can be seen and touched such as: Computer Case Monitor Keyboard and Mouse Disk Drive Speakers Computer Components:Hardware Hardware – the physical equipment of the computer that you can see and touch The Parts A of Computer CPU (Central Processing Unit) The “brains” of the computer housed on a tiny silicon chip inside the computer case. Floppy Disk Drive CD-ROM/DVD Drive Monitor Keyboard Mouse Speakers Printer Scanner Input Devices Keyboard Mouse/Trackball Joystick Light Pen Pointing Stick Touchpad Touch Screen Bar Code Reader Scanner Microphone Graphics Tablet Digital Cameras Output Devices Monitor: screen that displays information such as text, numbers, and Printer: gives you information pictures. Softcopy from the computer in printed form. Hardcopy Speakers: allow you to hear voice, music, and other sounds from your computer. Processing Device Central Processing Unit (CPU) – known as the heart or “brain” of the computer and is responsible for processing the information that has been entered into the computer Storage Devices Hard Disk Drive: used to store data inside of the computer. Magnetic platter that holds a large amount of information in a form the computer can understand. Floppy Disk: flat circles of iron oxide-coated plastic enclosed in a hard plastic case. Most are 3 ? inches and have a