计算机专业英语郭敏计算机专业英语Unit2章节.pptVIP

Unit 2 Section 2 Passage A component binary interact motherboard RAM ROM BIOS BUS O/I Harddisk sector Unit 2 Section 2 Passage B peripheral perform handle OA USB flash scanner fax machine storage device floppy disk capacity text digital image 3D illustrations daisy-wheel printer dot-matrix printer ink-jet printer laser printer * * Unit 2 Section 2 Passage B A fax machine is a device that can send or receive pictures and text over a telephone line. Fax machines work by digitizing an image -- dividing it into a grid of dots. Each dot is either on or off, depending on whether it is black or white. Electronically, each dot is represented by a bit that has a value of either 0 (off) or 1 (on). In this way, the fax machine translates a picture into a series of zeros and ones (called a bit map) that can be transmitted like normal computer data. Unit 2 Section 2 Passage B An MFP (Multi Function Product / Printer / Peripheral), multifunctional, all-in-one (AIO), or Multifunction Device (MFD), is an office machine which incorporates the functionality of multiple devices in one, so as to have a smaller footprint in a home or small business setting, or to provide centralized document management / distribution / production in a large-office setting. A typical MFP may act as a combination of printer, scanner, photocopier, and fax. Unit 2 Section 2 Passage B The most used peripherals for entertainment include MP3 players, MP4 players, DC, DV, and PSP, etc. An MP3 player is a portable consumer electronic device that allows you to store and plays music files in MP3 format. MP3 players are small handheld devices and often use flash memory for storing MP3 files. While frequently called an MP3 player, it fits under the broader category of digital audio players and often an MP3 players can use other file types such as Windows Media Audio (WMA). Unit 2 Section 2 Passage B The name MP4 player is a marketing term for portable media players that comply with certain standards and formats