Lecture 5---Hardware of CADCAM《先进制造技术(英)》、《机电专业外语》课件.pptVIP

Lecture 5 Hardware of CAD/CAM By, Zhang Hangwei Mechatronics Engineering College 3.5 CAD/CAM Hardware 3.5 CAD/CAM Hardware 2.1.5 CAD/CAM Hardware 2.1.5 CAD/CAM Hardware 2.1.5 CAD/CAM Hardware 2.1.5 CAD/CAM Hardware 2.1.5 CAD/CAM Hardware 2.1.5 CAD/CAM Hardware 数据手套 可用来给虚拟场景中的对象定位或操纵该场景的二维投影并可在视频监视器上观察。 3.5 CAD/CAM Hardware 3.5 CAD/CAM Hardware 3.5 CAD/CAM Hardware * Advanced Manufacturing Technology 1. CPU = Central Process Unit main memory Logic/Arithmetic Section 2.secondary storage medium Hard disk Floppy disk 3. input devices keyboard, keypad, joystick and track ball, Mice, Light Pen, Digitizer, Graphics scanners 4. output device a random-scan-line drawing CRT display a raster-scan display LCD=Liquid Crystal Display, plasma panel display difficult to hold the pen in an elevated position from beginning to end used for interactive graphics Light Pen difficult to trace a curve used to manipulate a cursor; for windows and pull-down menus especially Mice cannot reach an accurate position used to manipulate a cursor Joystick and Track ball Smaller than keyboard transmit number into electric signal Keypad transmit letter and number into electric signal Keyboard others functions Input devices Used to input an existing drawing by scan a drawing and convert it into a CAD-system-readable Graphics scanners Used to input an existing drawing and translate X-Y locations to a digital signal Digitizer others functions Input devices 3. input devices keyboard, keypad, joystick and track ball, Mice, Light Pen, Digitizer, Graphics scanners Mice 鼠标器是一个控制显示屏幕上光标移动的小型手控设备。鼠标器有机械式和光电式两种。 机械式鼠标器用底面附带的小球在桌面上滚动来移动光标。 光电式鼠标器则使用光点在特制的反射板上移动而使光标移动。鼠标器的按钮一般为两个(或三个)，最左边的为“拾取”按钮，其余的按钮可由用户定义。 3. input devices keyboard, keypad, joystick and track ball, Mice, Light Pen, Digitizer, Graphics scanners Joystic