Serial communication

... discussion of this advanced serial communication system 2.5 SUMMARY In this chapter, we have discussed the differences between parallel and serial communications and key serial communication- related ... low during the entire time slot allocated for a single bit SERIAL COMMUNICATION SUBSYSTEM 2.2.5 The RS-232 Communication Protocol When serial transmission occurs over a lon...

Ngày tải lên: 29/09/2013, 20:20

... chips ♦ Interface the 8051 with an RS232 connector ♦ Discuss the baud rate of the 8051 ♦ Describe serial communication features of the 8051 ♦ Program the 8051 for serial data communication ©2002 ... compare serial versus parallel communication ♦ List the advantages of serial communication over parallel ♦ Explain serial communication protocol ♦ Contrast synchronous...

Ngày tải lên: 19/10/2013, 14:15

... page 326 The Complete FreeBSD 326 In this chapter, we’ll look at the way FreeBSD handles serial communications, at how modems work, and how the two fit together Terminology Any serial connection ... 03:11:02) April 2003, 17:00:47 The Complete FreeBSD (modems.mm), page 327 327 Chapter 19: Serial communications • Before the character starts, the line is idle, which shows as a high level: this...

Ngày tải lên: 11/12/2013, 00:15

... Parallel Communication System Comparison • Data Transfer Speed Speed of the parallel data transfer is extremely high compared to serial data transfer • Complexity and Cost of Serial and Parallel ... transferdifficult and costlier on hardware resources and hence • What is the latest Trend? Serial or Parallel • How to Choose the Best Data Transfer Interface from Serial distanc...

Ngày tải lên: 23/03/2014, 13:20

... (UARTs)  the SPI synchronous serial interfaces  the I C synchronous serial interfaces Synchronous serial Asynchronous Serial Interfaces Some comparisons More Synchronous Communication Using the SPI ... mềm DAC 31 Serial Communications using the dsPIC30F UART Module  Serial transmission and reception  􀁏 8-bit or 9-bit data  􀁏 Full-duplex, asynchronous communication  􀁏 Sup...

Ngày tải lên: 30/12/2015, 18:05

... modify a page of data at a time An attempt by a reader to write previously read data causes a memory fault which converts a reader into a writer and invalidates all other page caches A subsequent attempt ... when it initiates a cache replacement A data manager may restrict the use of cached data by issuing a pager_data_lock request, specifying the types of ac...

Ngày tải lên: 12/09/2012, 15:05

... to obtain user-level ACM TransactIons threads on Computer Systems, Vol 9, No 2, May 1991 User-Level Interprocess satkfactory have Communication performance strong for Shared Memory Multiprocessors ... shared memory channel is ensured by ACM Transactions on Computer Systems, Vol 9, No 2, May 1991 User-Level Interprocess a combination statically) correctness Communicati...

Ngày tải lên: 12/09/2012, 15:05

Ngày tải lên: 13/09/2012, 10:21

... how the major wireless technologies are used today • Describe various applications of wireless communications technology • Explain the advantages and disadvantages of wireless communications ... data without the use of wires • Wireless data communications technologies include: – – – – Bluetooth Wireless LAN and WAN Satellite Cellular A Wireless World • Wireless devices – D...

Ngày tải lên: 13/09/2012, 10:52

Ngày tải lên: 13/09/2012, 10:52

... additional hours each day Increased Access to the Customer’s Own Data • Key factor in reducing business costs – Shift the burden of accessing a customer’s data from the business to the customer – ... staff 10 Summary • Wireless technology can positively impact an organization in many ways • Wireless technology faces various challenges • Once a business has decided to invest in...

Ngày tải lên: 13/09/2012, 11:16

... which is an evolution of IS-136, makes use of the enhanced data rates for GSM evolution (EDGE) radio interface Mobile Communication System Evolution 1.2.4.4 25 Enhanced Data Rates for GSM Evolution ... 42 kbit/s Mobile Communication System Evolution 21 1.2.4 Evolved Second-Generation (2G) Systems 1.2.4.1 Overview So-called evolved 2G networks are aimed at exploiting the...

Ngày tải lên: 14/09/2012, 11:26

... Server Mobile Assisted HO Mobile Application Part Maximum a Posteriori Mobile BCF Mobile Country Code Mobile Control Function Mobile Controlled HO Multiple Channels Per Carrier Mobile Communications ... PC Mobile Satellite Communication Networks Mobile IP Version Mobility Management Mobile Network Code Memorandum of Understanding Mobile Station Multi-Transport Satellit...

Ngày tải lên: 14/09/2012, 11:26

... device such as a VPN concentrator, or even a firewall Virtual Private Networks (VPNs) (continued) Protecting Directory Services • A directory service is a database stored on the network itself and ... International Standards Organization (ISO) created a standard for directory services known as X.500 Protecting Directory Services (continued) • Purpose of X.500 was to standardize how data w...

Ngày tải lên: 17/09/2012, 10:43

... nghệ truyền thông không dây quan trọng (gồm hệ thống di động tế bào) sử dụng • Mô tả ứng dụng công nghệ truyền thông không dây • Ad hoc wireless network – Mạng truyền thông không dây Ad hoc • Wireless ... hỗ trợ HSPA Công nghệ không dây dùng ntn? • Wireless – Mô tả thiết bị công nghệ không dùng nối dây • Truyền thông không dây – Truyền liệu khô...

Ngày tải lên: 17/09/2012, 10:43