Software interrupts

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  • During the early years of microprocessors, there were few engineers with education and experience in the applications of microprocessor technology. Now that microprocessors and microcontrollers have become pervasive in so many devices, the ability to use them has become almost a requirement for many technical people.

    pdf244p nhan4321 29-10-2009 147 60   Download

  • The analog output modules convert digital signals from the PLC into analog signals for the process. The modules feature the following: Resolution from 12 to 15 bit Various voltage and current ranges: The ranges are set independently for each channel using parameterization software. Interrupt capability: The module transmits diagnostic alarm messages to the controller’s CPU in the event of errors.

    pdf3p hoandk4 25-03-2010 145 24   Download

  • Sau khi học xong chương này người học có thể: nắm nguyên lý cấu tạo và đặc điểm của thiết bị I/O, nhiệm vụ và yêu cầu của thiết bị I/O, cách giao tiếp giữa CPU và thiết bị I/O, hiểu các bước trong quá trình ngắt quãng, nắm được cơ chế DMA. Mời các bạn cùng tham khảo.

    ppt49p nhanmotchut_1 04-10-2016 13 3   Download

  • Over the years, the role of the computer auditor has changed to being more consultative and value adding. Clearly, where a new system is being developed, it is more cost effective for audit comments to be provided prior to a system being implemented, when improved security and control features can be included more easily and cheaply. Similarly, although computer auditors regularly undertake audits of say logical access controls, there is considerable scope for computer auditors to be involved in the design of those components.

    pdf6p doipassword 01-02-2013 24 2   Download

  • The microcontroller is an exciting new device in the field of electronics control. It is a complete computer control system on a single chip. microcontrollers include EPROM program memory, user RAM for storing program data, timer circuits, an instruction set, special function registers, power on reset, interrupts, low power consumption and a security bit for software protection. Some microcontrollers like the 16F818/9 devices include on board A to D converters.

    pdf320p nguyenthai_thinh 16-03-2013 67 23   Download


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