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Examples and explanations on how to implement memory interfacing and address decoding using various memory chips and microprocessors. It covers topics such as interfacing 32kx16 eprom using 32kx8 eprom, calculating the number of memory chips required to make up 2kb of memory, implementing 64kx16 eprom using 32kx8 eprom, and address decoding for a 32kb ram interfaced with an 8088-based system. The document also discusses the importance of using address decoding circuits like 74ls139 and 74ls138 when the memory starts at an address other than 0000h. Additionally, it provides examples of interfacing 64kb ram with an 8086 microprocessor using exhaustive decoding. The document aims to provide a comprehensive understanding of memory interfacing and address decoding techniques, which are crucial concepts in digital electronics and computer architecture.
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EXAMPLE 2: IF THE MEMORY CHIP SIZE IS 1024 X 4 BITS, HOW MANY CHIPS ARE REQUIRED TO MAKE UP 2K BYTES OF MEMORY?
ĐỐI VỚI CÁC DẠNG BÀI TOÁN LƯU DỮ LIỆU BẮT ĐẦU TỪ ĐỊA CHỈ KHÁC 0000H (VD: 4000H,1000H,8000H) THÌ CHÚNG TA NÊN CHÚ Ý SỬ DỤNG MẠCH TÁC TỘNG ĐẾN C HÂN EN(SEL) CỦA CÁC VI MẠCH GIẢI MÃ ĐỂ PHÙ HỢP ĐIỀU KIỆN ĐẦU BÀI.