Pulse control type virtual keyboard

Abstract

The invention discloses a pulse-control type virtual keyboard, comprising a host (3) having a CPU and a memory, a mouse (2), a display (4) and a virtual keyboard (5) realized through software. The input end of the host (3) is electrically connected with a pulse controller (1) controlling digital increase and decrease in a digital dialog box displayed by the display (4); the pulse controller (1) is formed by orderly connecting a pulse coding module (11), a signal conditioning module (12) and a digital conversion module (13) in series; the digital conversion module (13) is electrically connected with the host (3); the display (4) is a touch screen display. The virtual keyboard has the advantages of conciseness, simple operation and reliable work, and is applicable to various detecting instrument devices.

Description

technical field [0001] The invention relates to a virtual keyboard, in particular to a pulse-controlled virtual keyboard capable of conveniently increasing or decreasing numerical values ​​in a digital dialog box. Background technique [0002] With the popularization and promotion of computers, instruments and equipment in all walks of life are controlled by computers, and computer-controlled man-machine dialogue is a necessary link. For man-machine dialogue with computers, keyboard and mouse are the main input tools. Since mechanical keyboards are easily damaged, virtual keyboards of various structures are widely used. Take the virtual keyboard on the detection instrument as an example, which includes number keys and function keys. During the setting and operation of the detection instrument, a selection dialog box and a number dialog box appear on the display. For the selection dialog box, the virtual keyboard is operated by one key. Although the number dialog box can mee...

AI Technical Summary

Problems solved by technology

Take the virtual keyboard on the detection instrument as an example, which includes number keys and function keys. During the setting and operation of the detection instrument, a selection dialog box and a number dialog box appear on the display. For the selection dialog box, the virtual keyboard is operated by one key. Although the number dialog box can meet the requirements of use by clicking the number keys of the virtual keyboard, when a certain detection item is repeatedly added and subtracted on a certain base for detection, the above-mentioned virtual keyboard interface is more complicated and the operation is more cumbersome.

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