3. Data Transmission between Wrist and the Walking Stick…………………………………..9 2.4 A/D conversion of Analog ECG signal to Digital ECG signal………………………………10 2.5 Heart Attack Detection…………………………………………………………………….....11 2.6 Emergency Calling…………………………………………………………………………...11 3. DESIGN DETAILS………………………………………………………………………….……12 1. Analog ECG Circuitry……………………………………………………………………….12 3.2 A/D Conversion and RS232 of PIC16F877…………………………………………………..12 3.3 Digital Data Transmission
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notes below. We will first list the layers as defined by the standard in the increasing order of function complexity: 1. Physical Layer 2. Data Link Layer 3. Network Layer 4. Transport Layer 5. Session Layer 6. Presentation Layer 7. Application Layer Physical Layer This layer is the lowest layer in the OSI model. It helps in the transmission of data between two machines that are communicating through a physical medium‚ which can be optical fibers‚ copper wire or wireless etc. The following
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MOBILE SERVICES GSM permits the integration of different voice and data services and the interworking with the existing network. GSM is defined for three different categories of services: bearer‚ tele‚ supplementary services. Figure shows the reference model for GSM services. A mobile station (MS) is connected to the GSM public land mobile network (PLMN) via Um interface. GSM-PLMN is the infrastructure needed for GSM network. This network is connected to transit network‚ e.g.‚ integrated service
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Communication Media Communication media refers to the means of delivering and receiving data or information. The communication media acts as a communication channel for linking various computing devices so that they may interact with each other. Below is a chart that shows the different types of communication media. Analog and Digital Data Transmission There are a number of differences between analog and digital transmission‚ and it is important to understand how conversions between analog and digital
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Module 2 Data Communication Fundamentals Version 2 CSE IIT‚ Kharagpur Lesson 1 Data and Signal Version 2 CSE IIT‚ Kharagpur Specific Instructional Objectives At the end of this lesson the students will be able to: • • • • • • • • • Explain what is data Distinguish between Analog and Digital signal Explain the difference between time and Frequency domain representation of signal Specify the bandwidth of a signal Specify the Sources of impairment Explain Attenuation and Unit of Attenuation
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www.Vidyarthiplus.com CS2060-HIGH SPEED NETWORKS Question bank Department:ECE Unit -1 Part-A 1. Differentiate Frame relay and X.25 packet-switching service -> Call control signaling is carried on a separate logical connection from user data. Thus‚ intermediate nodes need not maintain state tables or process messages relating to call control on an individual per-connection basis -> Multiplexing and switching of logical connections takes place at layer2 instead of layer3‚ eliminating one
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CHAPTER 7 UART 7.1 INTRODUCTION Universal asynchronous receiver and transmitter (UART) is a circuit that sends parallel data through a serial line. UARTs are frequently used in conjunction with the EIA (Electronic Industries Alliance) RS-232 standard‚ which specifies the electrical‚ mechanical‚ functional‚ and procedural characteristics of two data communication equipment. Because the voltage level defined in RS-232 is different from that of FPGA I/O‚ a voltage converter chip is needed
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networking system prepared and submitted by _________________________ in partial fulfillment of the requirements of Computer Science Course is hereby approved and accepted. Prof. Jonathan Pagurayan Adviser Case Study in Data Communication Prepared By: Roel Angelo D. Sobrevilla and Mark Anthony V. Baccay Introduction Computer shop business is one of the most in demand businesses here in Mandaluyong.Nowadays‚ internet cafes are really in demand because of the
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safe data transmission path‚ at speeds up to 10 Mbps. Red Tacton does not rely on electromagnetic or a light wave to transmit data. It makes use of weak electric fields on the surface of the body. Using a new super-sensitive photonic electric field sensor‚ it can achieve duplex communication over the human body. The Red Tacton chips‚ which will be embedded in various devices‚ contain a transmitter and receiver build to send and accept data stored in a digital format. The data transfer
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things must be present for communication to occur? * Transmission media‚ data transmission‚ cooperation * Define Bandwidth * Amount of data can be transferred from one point to another in a certain time * Define attenuation * Loss of power in a signal as it travels from sending device to receiving device * What is a protocol and why is it important in electronic communication? * Rules governing data communication including error detection‚ message length‚ speed
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