1、 1 附录 C：外文资料翻译 Uses the multi-monolithic integrated circuits fluid position monitoring meter Uses the monolithic integrated circuit design fluid position monitoring meter is the very general procedure. If must survey the fluid position has many groups (above 16 groups), each group request can roll d
2、emonstrates in 1 year each class, every day, each months input output total quantity (on 1st 3 classes), normal or the accident power cut data does not lose, man-machine interaction ability striving to excel (must establish suitable quantity pressed key and uses the LCD demonstration), and each Lu Y
3、ewei requests to correspond 2 group control output signal (fluid pot liquid input control and output control), the disposition miniature printer port, the establishment sound warning, all these need many I/O ports to support without doubt, the only monolithic integrated circuit is cannot accomplish,
4、 needs to expand the I/O port. In this design, the author thought that uses the special-purpose I/O expansion chip to have many malpractices, weighed the advantages and disadvantages, chooses has replaced special-purpose I/O with the monolithic integrated circuit the connection chip the method. spec
5、ial-purpose I/O chip and the monolithic integrated circuit serve as the I/O chip the contrast: Special-purpose I/O connection chips I/O mouth quantity are not more than the monolithic integrated circuit (the author to use monolithic integrated circuit model is 89C52). The special-purpose I/O connect
6、ion chip use is not flexible, several use ways have been established by the chip designer, cannot surpass this scope change, but the monolithic integrated circuit receives limits is small, uses nimbly. The special-purpose I/O connection chip independence is bad, intelligence difference, regardless o
7、f being receives the input signal or the output control signal, the I/O special-purpose chip adds color to the signal input output cannot make the decision, must by the monolithic integrated circuit decision making, only play relay or the transition signal role, has not monitored ability, cannot the
8、 independent processing question, but the monolithic integrated circuit is not so, may use many kinds of way nimble processing question. 2 Uses I/O to expand the special-purpose chip to probably be familiar with it, the engineers and technicians must be more than generally to monolithic integrated c
9、ircuits familiar degree to it, comparatively, uses it to waste the time, another I/O expands the special-purpose chip the price to be higher than the monolithic integrated circuit, considers from the cost accounting not economically. Special-purpose I/O chip timeliness is bad, because I/O expands th
10、e special-purpose chip only to play the receiving and dispatching signal the role, itself has not processed the processing signal ability, such signal will undergo its transmission back and forth to create the detention inevitably, will thus have the timely bad problem. Uses the monolithic integrate
11、d circuit to make the I/O connection, is advantageous for the software and hardware design modulation, the division of labor is clear, for the design, the debugging, the maintenance brings enormously convenient. Used the monolithic integrated circuit to make the I/O connection to strengthen for the
12、connection supervision dynamics, lightened the main monolithic integrated circuits burden. Hardware architecture and division of labor: The hardware design is divided the following several parts: Monolithic integrated circuit； A/D conversion fraction； Control signal output unit； The nonvolatile stor
13、age (makes the RAM expansion)； Presses a key the part； Demonstrates the part； Prints the I/O port part； Analog switch part. The monolithic integrated circuit selects 89C52, its characteristic is internal includes 8KB ROM, does not need outside the piece to expand ROM； A/D switch selects MC14433, its
14、 characteristic is the conversion accuracy is high, antijamming ability, each second may transform about 20 times, because the fluid position change is not very quick, therefore may satisfy the monitor fluid position change the need； The control signal output uses the monolithic integrated circuit t
15、o control the 74LS373 latchs way, This may fluctuate the control output port quantity through the fluctuation latch integer way； Because each group request can roll demonstrates in 1 year each class, every day, each months input output total quantity (on 1st 3 classes), normal or the accident power
16、cut data does not lose, therefore has used AT29LV040A (512KB) dodges the fast memory (also to be possible to use FRAM). 3 Because 89C52 are most may outside expand 64KB RAM, to guarantee that has the enough storage space to be possible AT29LV040A A16, A17 and a18 address wire and the 1# monolithic i
17、ntegrated circuits some port connection, like this through controls these 3 address wires the change to be possible to achieve uses AT29LV040The 512KB space goal. Presses a key the part to use conventional the non-code keyboard way then. In order to enhance the man-machine interactive ability, demon
18、strated that the part has used GXM12864SL large screen LCD, on such screen may demonstrate from arranges Chinese character, digit, equality and simple design； Prints the I/O port, may carry on the corresponding connection disposition according to the request then； The analog switch selects many piec
19、e of CD4051, they with the monolithic integrated circuit coordination, use in choosing in the multi-channel fluid position simulation quantity 1 group fluid position simulation quantity, then carries on a/D transformation. Because has selected 3 monolithic integrated circuits, has solved the I/O por
20、t insufficient problem effectively, also caused in the design to simplify many, so long as according to the conventional connection chip way, has then omitted many transition chips, like 74LS244, 74LS245, 74LS73 and so on, also caused the software design becomes simple easy. Because the hardware con
21、nection becomes simple moreover is the conventional connection, therefore this article has not provided the detailed line connection diagram. between 3 monolithic integrated circuits data exchanges have used the serial port mailing address. In this design, 3 monolithic integrated circuits use also r
22、eposition, certainly may also use separates the reset mode, but the pressed key must increase, this kind of situation regards the request to decide. 利用多重单片集成电路的液位监测仪 采用单片集成电路设计液位监测仪是非常一般的程序。如果必须检测很多组液位（ 16 组以上），每一组要求可以滚动显示一年中的每一类，每一天，每个月的输入输出总量（显示这三个其中的一个） ，正常或意外断电数据不会丢失，人机交互能力争取优化（必须设立适当的数量按键，并使用液晶显示屏） ，而且每个 LU 液位要求对应 2 组控制输出信号（流体电位器液体输入控制和输出控制），微型打印机端口的配置，语音报警系统的设立，毫无疑问，所有的这些都需要很多的 I/O 端口来支持，单一的单片集成电路是不能完成的， 需要扩充 I/O
