Computer universal serial bus interface device time-limited timing controller

Abstract

In the time-limited timing controller of the computer universal serial bus interface device, the lower four bits of a group of four-bit input port P2 of the minimum single-chip microcomputer system (1) and the encoder address output terminals A2, A1, A0 and the key switch are connected; one group of eight-bit output port P0 mouth and one group of four-bit output port P2 mouth of the minimum single-chip microcomputer system (1) The high four bits of the digital tube eight-segment code of the time display circuit (3) are connected respectively A segment and the four-digit selection terminal of the digital tube; a group of six-digit output ports of the minimum single-chip microcomputer system (1) The lower six bits of the P1 port and the buzzer, relay, digital tube, and indicator light of the peripheral response circuit (4) Connection; the peripheral control circuit is connected with the time display circuit through a digital tube to display the control status. The problem that cannot be solved by using the traditional software method to perform time-limited timing operations on the system is solved.

Description

technical field [0001] The present invention relates to a kind of computer USB (Universal Serial Bus, Universal Serial Bus) interface device design and implementing device of time-limited timing controller, especially to the design of the use time control and use process timing function of computer USB peripherals, suitable for The operation process of using the USB device for a limited time and using the timer. Background technique [0002] At present, with the development of science and technology, there are more and more high-tech products such as computers, and at the same time, more and more peripheral expansion devices are required. As a convenient and fast peripheral interface device, USB peripherals have been favored by the majority of users. But almost all computers do not have time-limited timing control to its peripheral equipment, especially in the era when computer games are flooding, how to control the game time has become an urgent problem for parents and teac...

AI Technical Summary

Problems solved by technology

[0002] At present, with the development of science and technology, there are more and more high-tech products such as computers, and at the same time, more and more peripheral expansion devices are required. As a convenient and fast peripheral interface device, USB peripherals have been favored by the majority of users. However, almost all computers do not have time-limited timing control for their peripheral equipment, especially in the era of flooding computer games, how to control the game time has become an urgent problem for parents and teachers to solve

At the same time, the control of the operating time at this stage is all implemented by computer software. These operations have a strong dependence on the operation of the computer, and can only be operated on the currently running computer system, but not on a specific USB. The device is controlled, which brings a lot of inconvenience to the user

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