JPS61138034U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a keyboard device according to an embodiment of this invention, and FIG. 2 is a block diagram showing a conventional keyboard device. In the figure, 1 is a character key, 2 is a character type shift key, 3 is a character type shift storage circuit, 6 is a character type shift control circuit, 8 is an input terminal, 9 is a decoder, 10 is a change circuit, 11 is a keyboard device, 12 is an external device. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] It has multiple character keys and a character type shift key with multiple levels such as kana, uppercase English letters, lowercase English letters, symbols, etc., and the character code that occurs when the above character key is pressed is the same as the one above that has been pressed in advance. In a keyboard device that changes according to the character type shift key, a change circuit capable of disabling the output of a character type shift control circuit that controls the character code to be generated when the character key is pressed, and a change circuit for this change circuit. a decoder that outputs a valid or invalid instruction and controls the character type shift state stored in the character type shift memory circuit to be changed by pressing the character type shift key; A keyboard device comprising: an input terminal for receiving a character type shift control signal from the device.