http://appliancerepairfirst.com Get free appliance repair and troubleshooting advice. Fri, 12 Mar 2010 15:45:18 +0000 http://backend.userland.com/rss092 en Once basic logic design theory is understood, the next step is transferring that knowledge to a practical context that includes real components. This chapter explains what an integrated circuit is and how off-the-shelf components can beused to implement arbitrary logic functions. Integrated circuits, called chips by engineers and laymen alike, ... http://appliancerepairfirst.com/complete-digital-design/digital-fandamentals/integrated-circuits-and-the-7400-logic-families/integrated-circuits-and-the-7400-logic-families/ Different external serial modems use an assortment of different types of cables. Make sure the cable is actually a modem cable; other cables might fit, but that doesn't mean they'll work. Also try testing the cable in a cable tester. With USB cables, it is often easy to swap with ... http://appliancerepairfirst.com/pc-repair-and-maintenance/video-sound-modems-and-network-adapters/modem-cables/ Motorola followed its 6800 family by leaping directly to a hybrid 16/32-bit microprocessor architecture. Introduced in 1979, the 68000 is a 16-bit microprocessor, due to its 16-bit ALU, but it contains all 32-bit registers and a linear, nonsegmented 32-bit address space. (The original 68000 did notbring out all 32 address ... http://appliancerepairfirst.com/complete-digital-design/digital-fandamentals/instructive-microprocessors-and-microcomputer/motorola-68000-1632-bit-microprocessor-family/ Intel moved up to a 16-bit microprocessor, the 8086, in 1978 just two years after introducing the 8085 as an enhancement to the 8080. The x86 family is famous for being chosen by IBM for their original PC. As PCs developed during the past 20 years, the x86 family grew ... http://appliancerepairfirst.com/complete-digital-design/digital-fandamentals/instructive-microprocessors-and-microcomputer/intel-8086-16-bit-microprocessor-family/ Modems can be troublesome. If you have a telephone communications problem, there are a number of things you can do to check to see if the modem is working. Note It bears repeating that the message often seen in the properties of any hardware device, "This device is working properly," is ... http://appliancerepairfirst.com/pc-repair-and-maintenance/video-sound-modems-and-network-adapters/diagnosing-modem-problems/ Computer architecture is central to the design of digital systems, because most digital systems are, at their core, computers surrounded by varying mixes of interfaces to the outside world. It is dif?cult to know at the outset of a project how advanced architectural concepts may ?gure into a design, because ... http://appliancerepairfirst.com/complete-digital-design/digital-fandamentals/instructive-microprocessors-and-microcomputer/advanced-microprocessor-concepts/ Following their success in the microprocessor market, Intel began manufacturing microcontrollers in 1976 with the introduction of the 8048 family. This early microcontroller contains 64 bytes of RAM, 1 kB of ROM, a simple 8-bit microprocessor core, and an 8-bit timer/counter as its sole on-board peripheral. (Subsequent variants, the 8049 ... http://appliancerepairfirst.com/complete-digital-design/digital-fandamentals/instructive-microprocessors-and-microcomputer/intel-8051-microcontroller-family/ Even though modem speed hasn't changed since 1998, modems have gotten better. You might recall that picking up a telephone while an early 56K modem was connected to the Internet on the same line caused the modem to instantly disconnect the connection. Fortunately, that problem was abated in subsequent modems. ... http://appliancerepairfirst.com/pc-repair-and-maintenance/video-sound-modems-and-network-adapters/selecting-a-modem/ As the microprocessor market began to take off, Motorola jumped into the fray and introduced its eight-bit 6800 in 1974, shortly after the 8080 ?rst appeared. While no longer available as a discrete microprocessor, the 6800 is signi?cant, because it remains in Motorolas successful 68HC05/68HC08 and 68HC11 microcontroller families and ... http://appliancerepairfirst.com/complete-digital-design/digital-fandamentals/instructive-microprocessors-and-microcomputer/motorola-6800-eight-bit-microprocessor-family/ Oddly, modems are often confused with the computer itself. A modem, as discussed in this chapter, is a device that connects a computer to a standard analog telephone line, the kind to which your telephone is connected. Modems are used for dial-up Internet service, telephone use such as faxing, wide ... http://appliancerepairfirst.com/pc-repair-and-maintenance/video-sound-modems-and-network-adapters/modem-overview/