The structure and working process of single chip microcomputer application system

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The structure and working process of single chip microcomputer application system [Copy link]

The structure and working process of the single-chip microcomputer application system: 1. Structure

A single-chip microcomputer is formed by making the CPU, memory and input/output interface into an integrated circuit, but a single single-chip microcomputer integrated circuit cannot work. Some peripheral circuits must be added to it to form a single-chip microcomputer application system. The structure of a typical single-chip microcomputer application system is shown in Figure 1-3. As can be seen from Figure 1-3, a typical single-chip microcomputer application system includes a single-chip microcomputer, input circuits and input components, output circuits and output components. Figure 1-3 Typical single-chip microcomputer application system structure

Figure 1-3 Typical single-chip microcomputer application system structure

2. Working process Figure 1-4 shows the single-chip microcomputer control circuit for the VCD player tray in and out. The following uses it as an example to illustrate the working process of the single-chip microcomputer application system.

When the "eject" button is pressed, the tray of the spy camera is ejected from the machine. The disc is placed on the tray, and then the tray is pushed into the inner diameter of the machine. The tray immediately presses the tray detection switch S to close, and a low level is obtained at point A. After the level is sent to the single-chip microcomputer, the single-chip microcomputer immediately outputs a control signal (high level). The signal is sent to the base of the driver tube VT through R2. VT is turned on, and current passes through the motor. The motor runs to retract the tray into the machine; once the tray is completely entered into the machine, the tray detection switch S linked to the tray is disconnected, and a high level is obtained at point A. After the level is sent to the single-chip microcomputer, the single-chip microcomputer immediately outputs a control signal (low level), the driver tube VT is cut off, and the motor stops. This information belongs to the purchase line network. If you need to reprint it, please indicate the source