JPS6454143U

JPS6454143U -

Info

Publication number: JPS6454143U
Application number: JP14826987U
Authority: JP
Priority date: 1987-09-30
Filing date: 1987-09-30
Publication date: 1989-04-04

Description

[Brief explanation of the drawing]

第１図はこの考案によるキーボード装置を用い
たマイクロコンピユータのブロツク図、第２図は
第１図に示すキーボード装置の平面図、第３図は
第１図に示すキーボードコントローラのコード変
換例を示す図表、第４図は従来からある８１型の
キーボード装置の平面図、第５図は従来からある
１０１型のキーボード装置の平面図である。１６…キーボード、１８…通常キー、１９…特
殊キー、２０…キー状態検出部（キースキヤン回
路）、２１…キーコード発生部（キーコード発生
回路）。 Fig. 1 is a block diagram of a microcomputer using the keyboard device according to this invention, Fig. 2 is a plan view of the keyboard device shown in Fig. 1, and Fig. 3 shows an example of code conversion of the keyboard controller shown in Fig. 1. FIG. 4 is a plan view of a conventional 81-type keyboard device, and FIG. 5 is a plan view of a conventional 101-type keyboard device. 16...keyboard, 18...normal key, 19...special key, 20...key state detection section (key scan circuit), 21...key code generation section (key code generation circuit).

Claims

[Scope of utility model registration request]

A keyboard having normal keys and one special key, a key state detection section that detects whether each key on the keyboard is on or off, and whether the special key is turned off is detected by the key state detection section. When the on state of the normal key is detected, the normal key code corresponding to this normal key is output, and when the key state detection unit detects the on state of the special key, the normal key code is output. A keyboard device comprising: a key code generating section that outputs a special key code corresponding to the normal key when the on-state of the normal key is detected.