《数字逻辑电路》Lec2 Number Systems and Codes.pdfVIP

数字逻辑电路 Digital Logic Circuit 2011 Spring 1 Advantage n Reproducibility n Easy of Design nn EasyEasy of Processingof Processing n High Speed n Expansibility n Reliability n Economy 2 Digital Devices for Digital System n Uses for digital IC technology today: n standard microprocessors n used in desktop PCs, and embedded applications n simple system design (mostly software development) nn memory chipsmemory chips (DRAM, SRAM)(DRAM, SRAM) n application specific ICs (ASICs) n custom designed to match particular application n can be optimized for low-power, low-cost, high-performance n high-design cost / relatively low manufacturing cost n field programmable logic devices (FPGAs, CPLDs) n customized to particular application after fabrication n short time to market n relatively high part cost n standardized low-density components(LSI,MSI,GAL/PAL) 3 n still manufactured for compatibility with older system designs Devices vs. IC 4 HDL Sketch on Napkin assign Out = Q ^ In; always @ (posedge Clock) begin if (Reset) Q = 1 b0; else Q = In; end Verilog Placed and Routed Design 5 SOC Design Flow IP Based 6 PDF 文件以 FinePrint pdfFactory Pro 试用版创建 Lec2 Number Systems and Codes