举一反三
- Name the three types of bus which are used when external memory is connected to the 8051.( ) A: Address bus B: Control bus C: Data bus D: Enable bus
- 6. 计算机总线按照功能可分为？ A: 地址总线（Address Bus） B: 数据总线（Data Bus） C: 控制总线（Control Bus） D: 系统总线（System Bus）
- The indirect decoding method means that the IO interface addressing requires at least two bus operations. The first bus operation outputs and latches the address through the data bus to the address port in the IO interface. The second bus operation can realize the communication of other ports of the IO interface.
- In our sample microprocessor, we have an address bus （） bits wide and a data bus （） bits wide. A: 8 B: 4 C: 16 D: 32
- which address signals are used to generate the chip select signal of the memory chip for the one-to-one mapping of the memory chip to the logical storage space of the computer system? A: some of the high-order address signals of the address bus B: the lower-order address signals of the address bus C: all remaining high-order address signals of the address bus D: One of the remaining high-order address signals of the address bus
内容
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— Excuse me! I’m going to Linzi. The No. 51 bus? The No. 51 bus __to Huantai. Take the No. 20 bus, please.
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PCI Bus是并行（Parallel）共享（ ），可以使各种速度不同的（ ）联接在一起工作，透过Bus管制功能（Bus Arbitration）取得Bus的使用权 A: Bus B: DNP C: Device D: ASCII
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A dedicated bus needs address lines.
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18.A) Bus 7.B) Bus 70.C) Bus 17.D) Bus 20. A: Bus 7. B: Bus 70. C: Bus 17. D: Bus 20.
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In Verilog HDL, which option is the correct interpretation of the following statement? assign bus [7:4] = {bus [0], bus [1], bus[2], bus[3] } ; A: bus[0], bus[1], bus[2] and bus[3] are assigned to bus[4], bus[5], bus[6] and bus[7] respectively B: bus[0], bus[1], bus[2] and bus[3] are assigned to bus[7], bus[6], bus[5] and bus[4] respectively C: The values of bus[0], bus[1], bus[2] and bus[3] remain unchanged D: All the values of bus[0], bus[1], bus[2] and bus[3] become binary 0