A computer lottery turntable

Abstract

A computer lottery turntable mainly includes a base, a chassis, a turntable, a pointer and a keyboard chip. There is a shaft on the base, and the shaft is fixed on the base; the chassis is sleeved on the shaft and fixed on the base; there are a plurality of contacts on the chassis, which are connected with the row and column I / O ports of the keyboard chip; the contacts are distributed in the The surface of the chassis forms the shape of two concentric circles with the axis as the center, one large and one small; two connecting contacts are arranged on the turntable. When the turntable rotates, the connecting contacts are continuously connected to the contacts on the large circle and the small circle of the chassis, so that the keyboard chip continuously generates corresponding key codes, and transmits them to the computer through the USB interface, and the process is displayed on the screen. result. The main advantages of the present invention are as follows: low manufacturing cost; it can be used independently, and can also be connected to a computer to display the process and results on the screen; corresponding programs can be written according to the keyboard generated by the rotation of the turntable.

Description

technical field [0001] The invention belongs to entertainment products, and in particular relates to a lottery turntable which can be connected to a computer. Background technique [0002] The lottery turntable is widely used in some variety shows, merchants' product promotion activities, and other lottery-style activities. In order to allow the audience to see clearly, the lottery turntable is often made very large. Although the huge lottery turntable allows the audience to see clearly, the manufacturing cost is also very high, and it is not convenient to carry. In addition, in the traditional lottery turntable, the surface of the turntable is divided into several areas according to the fan shape, and each area is pasted with corresponding lottery content; if it is replaced with another activity content, another lottery content needs to be made and pasted on the turntable; The operation is troublesome and costs money. [0003] Nowadays, the application of projection, elec...

AI Technical Summary

Problems solved by technology

In order to allow the audience to see clearly, the lottery turntable is often made very large. Although the huge lottery turntable allows the audience to see clearly, the manufacturing cost is also very high, and it is not convenient to carry

In addition, in the traditional lottery turntable, the surface of the turntable is divided into several areas according to the fan shape, and each area is pasted with corresponding lottery content; if it is replaced with another activity content, another lottery content needs to be made and pasted on the turntable; Operation is cumbersome and costly

[0003] Nowadays, the application of projection, electronic screen and other equipment is very common, so it is also possible to simulate the lottery turntable in the form of computer software by writing a program, and display it on the screen so that the audience or parties can see it clearly; It is realized in the form of pure computer software, which lacks the real feeling of turning the turntable by hand, and the internal process of the operation of the computer software is invisible to the audience or the parties concerned. Think cheating or feel unfair

Images