|
| |
| | Integrated circuit - Encyclopedia.WorldSearch |
 | | Integrated circuits can be classified into analog, digital and mixed signal (both analog and digital on the same chip). | | | Among the most advanced integrated circuits are the microprocessors, which drive everything from computers to cellular phones to digital microwave ovens. | | | LSI circuits began to be produced in large quantities around 1970, for computer main memories and pocket calculators. |
|
http://encyclopedia.worldsearch.com/integrated_circuit.htm
|
|
| |
| | Circuit Shop home page |
| | Circuit Shop is an easy to use graphical CAD tool to allow simple digital and analog electronic circuits to be constructed and simulated. | | | Circuit Shop allows you to design, simulate and learn about digital and analog electronic circuits. | | | Digital circuit design and analysis capability using digital sources, logic gates, flip-flops, timers, sequence generators, digital displays, ICs and digital oscilloscopes. |
|
http://www.cherrywoodsystems.com/cshop1.htm
|
|
| |
| | electric circuit on Encyclopedia.com |
| | A digital circuit is a special kind of electronic circuit used in computers and many other devices. | | | Operating electric circuits can be used for general problem solving (as in an analog computer). | | | Magnetic circuits are analogous to electric circuits, where magnetic materials are regarded as conductors of magnetic flux. |
|
http://www.encyclopedia.com/html/e1/elect-cir.asp
|
|
| |
| | integrated circuit on Encyclopedia.com |
| | Some hybrid integrated circuits contain both analog and digital circuitry; a bilateral switch, which switches analog signals by means of a digital control signal is an example of a hybrid IC. | | | Legend's MSIM Circuit Simulator and Silicon Canvas's Laker-ADP Are Integrated for Quality Results of Analog Designs. | | | Ziptronix Appoints Phil Nyborg As New CEO; Semiconductor Industry Veteran Tapped to Commercialize Proprietary Technology for Three-Dimensional Integrated Circuits. |
|
http://www.encyclopedia.com/html/i1/integrated.asp
|
|
| |
| | Computer - Wikipedia, the free encyclopedia |
| | Computers have been used to control mechanical devices since they became small and cheap enough to do so; indeed, a major spur for integrated circuit technology was building a computer small enough to guide the Apollo missions and the Minuteman missile, two of the first major applications for embedded computers. | | | A computer application is a piece of computer software provided to many computer users, often in a retail environment. | | | Computer science is an academic study of the processes related to computation, such as developing efficient algorithms to perform specific tasks. |
|
http://en.wikipedia.org/wiki/Computer
(4310 words)
|
|
| |
| | Counter |
| | Usually, counter circuits are digital in nature, and count in binary, or sometimes binary coded decimal. | | | Many types of counter circuit are available as digital building blocks, for example a number of chips in the 4000 series implement different counters. | | | The simplest counter circuit is a single D-type flip flop, with its D (data) input fed from its own inverted output. |
|
http://www.sciencedaily.com/encyclopedia/counter
(4310 words)
|
|
| |
| | Digital Circuits and Transmission Services In-Depth © AA VERSTRAETE |
| | This ideal led to the development of the T-carrier system which provided the foundation for the development of the long-distance digital networks which is described in the next section. | | | At each switching node, the circuit had to be demultiplexed into its constituent channels before calls could be switched onto the next leg of their journey. | | | One, called a switched virtual circuit [SVC] is held until the connection is terminated by the transmission of a clear request packet which causes the erasure of all virtual circuit table entries related to that virtual circuit. |
|
http://www.smeal.psu.edu/misweb/datacomm/ID/WANCIRCS.HTM
(6011 words)
|
|
| |
| | Circuit (Linktionary term) |
| | In the world of computer networking, the term "circuit" is used in many different contexts. | | | In contrast, a TCP connection-oriented circuit is established between software applications across a packet switched network. | | | Digital cellular systems extend the analog system with TDM or CDM technologies and digitizing voice. |
|
http://www.linktionary.com/c/circuit.html
(6011 words)
|
|
| |
| | Wiley::CMOS, Mixed-Signal Circuit Design |
| | The power of mixed-signal circuit designs, and perhaps the reason they are replacing analog-only designs in the implementation of analog interfaces, comes from the marriage of analog circuits with digital signal processing. | | | The coverage is both practical and in-depth, integrating experimental, theoretical, and simulation examples to drive home the why and the how of doing mixed-signal circuit design. | | | This book builds on the fundamental material in the author's previous book, CMOS: Circuit Design, Layout, and Simulation, to provide a solid textbook and reference for mixed-signal circuit design. |
|
http://www.wiley.com/WileyCDA/WileyTitle/productCd-0471227544.html
(6011 words)
|
|
| |
| | Circuit City Coupon Deals :: CircuitCity.com Coupons |
| | Circuit City sells tons of electronics products, music, dvd movies, digital cameras, car audio, home theater, and portable electronics products. | | | But CircuitCity is also a great place to find computers and computer products like computers, handheld PDAs, printers, peripherals, accessories, home networking products, wireless phones, computer software, office furniture, video cards, sound cards, video and computer games and more. | | | Besides for Circuit City coupons, we have coupons for dozens of other online computer stores including: 123Inkjets.com Coupons - Gateway.com Coupon - 4Inkjets.com - Vanns - HP.com - hpshopping.com - Circuit City Coupon - TigerDirect.com Coupons - Palm Store Coupon - More Computer Coupons |
|
http://www.computers-coupon-gateway.com/circuit-city-coupon.html
(6011 words)
|
|
| |
| | Patent 4093873: Compensating digital counter for quartz crystal oscillator |
| | The digital counter defined by claim 7 wherein said interrupt means includes toggling means for selectively preventing the flow of a binary digit from one stage to another stage of said plurality of stages. | | | The digital counter defined by claim 5 wherein a second group of stages of said plurality of stages is coupled between said first group of stages and said stages employed for deviation of said first and second frequency signals. | | | Assume further that the count in the stages of the counter is not sufficient to provide either a 1/8T signal or a 1/256T signal, and that the Q output of the block carry circuit 83 is high and the Q output of the fuse read circuit 84 is high. |
|
http://www.freepatentsonline.com/4093873.html
(6011 words)
|
|
| |
| | Define digital signal processing - a definition from Whatis.com - see also: DSP |
| | If a received signal is digital, for example computer data, then the ADC and DAC are not necessary. | | | This is true whether the signals are analog or digital, and regardless of the type of information conveyed. | | | Frequently Asked Questions (FAQs) on digital signal processing is a site that contains many links to information about DSP and related technologies. |
|
http://whatis.techtarget.com/definition/0,,sid9_gci213898,00.html
(452 words)
|
|
| |
| | Patent 5740219: Digital counter test circuit |
| | Digital counters having a large component count currently are used in integrated circuit and other circuit applications. | | | It is desirable to provide a system and method for testing digital counters which eliminates switchover time between the testing of different blocks or stages within the counter and which fully tests all of the counter segments, including carryovers from previous segments, in a complete, rapid, efficient test. | | | Other systems have been devised for testing digital counters to eliminate a switchover time between the testing of different blocks, as is required with the system of Moughanni. |
|
http://www.freepatentsonline.com/5740219.html
(452 words)
|
|
| |
| | AllRefer.com - Claude Shannon (Mathematics, Biography) - Encyclopedia |
| | His insight that all data could be encoded as a series of 1's and 0's pioneered the breakthrough in digital electronics that led to the modern digital computer and telecommunications networks. | | | A student of Vannevar Bush at the Massachusetts Institute of Technology (MIT), he was the first to propose the application of symbolic logic to the design of relay circuitry with his paper "A Symbolic Analysis of Relay and Switching Circuits" (1938). |
|
http://reference.allrefer.com/encyclopedia/S/Shannon.html
(452 words)
|
|
| |
| | SECTION 4: Digital Counter |
| | he main function of the digital counter unit is to process the incoming signal from the threshold circuit and display a digital readout. | | | The digital counter unit was built using the following components. | | | The counter need a clock pulse, this pulse signal will be coming from the threshold circuit. |
|
http://home.att.net/~eliel/digital_coun.htm
(452 words)
|
|
| |
| | Introduction to Digital Signal Processing |
| | The development of digital signal processing dates from the 1960's with the use of mainframe digital computers for number-crunching applications such as the Fast Fourier Transform (FFT), which allows the frequency spectrum of a signal to be computed rapidly. | | | The processing of a digital signal is done by performing numerical calculations. | | | This generates a digital output as a stream of binary numbers whose values represent the electrical voltage input to the device at each sampling instant. |
|
http://www.dsptutor.freeuk.com/intro.htm
(861 words)
|
|
| |
| | Introduction to WAN Technologies |
| | Because ISDN circuits are digital, the conversion from digital to analog is not required. | | | DDR is a technique whereby a router can dynamically initiate a call on a switched circuit when it needs to send data. | | | However, in dial backup, the switched circuit is used to provide backup service for another type of circuit, such as point-to-point or packet switching. |
|
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/introwan.htm
(861 words)
|
|
| |
| | FDI DSP - Digital Signal Processing - Design Guide |
| | Digital Filters are used primarily when transfer-function requirements have no counterpart in the analog world, or when a DSP already resides on the circuit board to perform other functions. | | | A digital filter computes a quantized time-domain representation of the convolution of the sampled input time function and a representation of the weighting function of the filter. | | | Instead of using a commercial DSP with software algorithms, a digital hardware filter can also be constructed from logic elements such as registers and gates, or an integrated hardware block such as an FPGA (Field Programmable Gate Array). |
|
http://www.freqdev.com/guide/dspguide.html
(3338 words)
|
|
| |
| | Thai digital counter |
| | The project presents the digital VHDL language method. | | | The knowledge gained from this project can be used for more complex and higher level of integrated circuit. | | | The circuit of BCD counter, decoder, scanner and high speed counter. |
|
http://library.kmitnb.ac.th/projects/eng/EE/ee0039e.html
(3338 words)
|
|
| |
| | CNN - 1957: Digital Equipment scales computers down in size, price - May 12, 1999 |
| | Instead, the business plan proposed two types of printed-circuit modules, digital laboratory modules and digital systems modules to be used by engineers and scientists to test devices they were building or by commercial companies to build systems for their customers. | | | Olsen was inspired by the Whirlwind computer, the first digital computer at MIT, and the TX-0, the first transistor-based computer. | | | ARD agreed that Digital could incorporate these modules into its first computer, the PDP-1. |
|
http://www.cnn.com/TECH/computing/9905/12/1957.idg
(3338 words)
|
|
| |
| | digital computer on Encyclopedia.com |
| | Circuit City to Offer Digital Lifestyles Group's hip-e Node; First All-in-One Computer and Entertainment System for Teens Available in Stores Next Month. | | | Digital Lifestyles Group Announces Availability of hip-e Teen Lifestyle Computer and Entertainment System on Amazon.com. | | | TatTelecom Selects Digital Lightwave Network Information Computer; NIC Units Fulfill SDH Testing Needs Across Tatarstan, Russia. |
|
http://www.encyclopedia.com/html/X/X-digitlcom.asp
(396 words)
|
|
| |
| | Integrated Services Digital Network - Wikipedia, the free encyclopedia |
| | (ISDN) is a type of circuit switched Telephone network system, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in better quality and higher speeds than available with analog systems. | | | More broadly, ISDN is a set of protocols for establishing and breaking circuit switched connections, and for advanced call features for the user. | | | The "Digital" in ISDN refers to its purely digital transmission, as opposed to the analog transmission of plain old telephone service. |
|
http://en.wikipedia.org/wiki/Integrated_Services_Digital_Network
(1598 words)
|
|
| |
| | LS100TM |
| | Signal switching circuit selection between analog and digital | | | The digital switching circuit provides environment for testing telecommunication equipment in real PBX system. | | | In the digital switching circuit mode, audio signal input at each line is routed through CODEC (coder/decoder) circuit where the signal goes through low-pass filter section and A/D converter. |
|
http://www.microseveninc.com/ls100tmbroc.htm
(1764 words)
|
|
| |
| | Integrated Circuit Development |
| | Figures IC-8 and IC-9 illustrate the speed-power performance of a number of different device types for known analog and digital circuits for which considerable test data exists in our laboratory for a number of device technologies, with the results from the low bandgap transistors developed from simulations. | | | Additional test circuits that have been designed during the 1990s include a continuity test circuit that can be used to verify new types of assembly interconnect techniques, and a specialized chip to distribute clock signals to many locations within a large digital system. | | | Figure IC-4 shows measured results from digital integrated circuits designed in our laboratory and fabricated for us by HRL Laboratories in one of the earlier versions of their InP HBT process, showing correct operation of this circuit at clock rates of 27 GHz. |
|
http://www.mayo.edu/sppdg/ic_development.html
(2380 words)
|
|
| |
| | Broadband Technologies and Definitions |
| | That's why your computer has to have a modem - so that it can demodulate the analog signal and turn its values into the string of 0 and 1 values that is called digital information. | | | IDSL is a system in which digital data is transmitted at 128 Kbps on a regular copper telephone line (twisted pair) from a user to a destination using digital (rather than analog or voice) transmission, bypassing the telephone company's central office equipment that handles analog signals. | | | Digital data is transmitted to your computer directly as digital data and this allows the phone company to use a much wider bandwidth for transmitting it to you. |
|
http://www.cis.state.mi.us/mpsc/comm/broadband/mediums/tech_def.htm
(7095 words)
|
|
| |
| | ePanorama |
| | Analog-input circuit serves any microcontroller - This simple ADC is suitable for getting analog signals into a purely digital microcontroller. | | | WhiDet - this circuit uses digital techniques to measure and decode the input signal to detect a whistle. | | | D/A (Digital to Analog) Converters: This feature takes a Digital number and converts it to a analog output. |
|
http://www.epanorama.net/links/microprocessor.html
(164 words)
|
|
| |
| | Cisco Chooses Mitel Digital Switching Integrated Circuits To Fuel High-Performance Voice And Data Convergence |
| | By using an architecture that is common to other digital switches in Mitel Semiconductor's switch family, Mitel substantially eases software development. | | | Mitel Semiconductor was the first to introduce a quad digital switching IC supporting rate conversion and data rates of up to 16.384 Mb/s. | | | The digital switching ICs integrate voice, data and video Time Division Multiplexed (TDM) traffic into applications on Cisco access concentrators, routers, gateways and switching platforms. |
|
www.tmcnet.com/scripts/print-page.aspx?PagePrint=http://www.tmcnet.com/tmcnet/newsit/it1000841.htm
(164 words)
|
|
| |
| | Digital Telephony: Sending High-Speed Data Over Phone Lines |
| | This network (integrated services digital network) was supposed to be the widespread digital phone circuit. | | | The digital signals produced by customer devices (with throughput less than 56 kbps) are asynchronous, which means each byte is distinguished by start and stop bits, and the time interval between bytes varies. | | | Your modem allows your computer to communicate with other computers by converting digital communications into analog format, so they can travel through the public phone network. |
|
http://bg.ecmweb.com/ar/electric_digital_telephony_sending
(164 words)
|
|
| |
| | Privateline.com: Packet and circuit switching |
| | In earlier networks, whether analog or digital, each call creates a circuit that reserves a channel between two parties for the entire session. | | | Packet Video is promising video clips at 60Kbs over conventional circuit switched cellular radio channels, indeed, they say they are platform independent, that is, their technology will work over whatever radio technology a carrier is using. | | | Other packets from other calls race upon these circuits as well, making the most use of each track or path, quite unlike the circuit switched calls that occupy a single single path to the exclusion of all others. |
|
http://www.privateline.com/Switching/packet.html
(164 words)
|
|
|
