JPH06274261A - Information input device - Google Patents

Abstract

PURPOSE:To prevent a command character string from being inputted in error by an information input device for inputting a command by the input of a text character string from a keyboard (KB). CONSTITUTION:Respective LEDs 42 are incorporated in key switches 41 on the keyboard (KB) 4, and when the initial character of a command character string is inputted, character to be inputted as a 2nd character is automatically judged and only the LEDs of the key switches corresponding to the characters to be inputted are turned on. Similar operation is repeated for the 3rd and succeeding characters.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information input device for inputting a command by inputting a text character string from a keyboard.

[0002]

2. Description of the Related Art In an information input device for inputting a command by inputting a text character string from a keyboard, conventionally, if the command character string is erroneously input, all command character strings are input and the return key is pressed. An error message was issued after pressing and the operator could only know at this point that he had made a mistake.

[0003]

However, in the conventional information input device, if the command character string is erroneously input, it is necessary to re-input all the character strings from the beginning, which is troublesome. . In particular, there was a problem that it was very difficult for beginners to use.

An object of the present invention is to solve such problems and prevent erroneous input of command character strings.

[0005]

According to the present invention, in order to solve the above-mentioned problems, all the key switches of the keyboard are L-shaped.
It has a built-in ED and has a command character string judgment unit that judges the characters that can be input after the first character of the command character string. Turn on the light.

[0006]

According to the present invention, when the operator inputs a command character string, the operator can input the command character string while observing the lighting state of the LED, so that erroneous input can be prevented and the operation is easy.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An information input device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a hardware configuration diagram in an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a CPU (central processing unit), which controls various devices according to a program stored in a program memory (ROM) 2. In this embodiment, the first character string of a command character string is used. When a character is input, it has a command character string determination means for determining a character that can be input after the second character. 3 is a memory for storing a list of command character strings supported by the device,
It is composed of RAM. 4 is L for all key switches
Keyboard (KB) with built-in ED, 5 is CRT or LCD
And the like, each of which is connected by a bus 6,
Information and signals are exchanged.

FIG. 2 is a schematic diagram in which an LED 42 is built in all of the key switches 41 of the keyboard (KB) 4 of FIG.

The operation of the present invention will be described below in the case of a disk operating system (DOS) command.

There are dozens of basic commands in the DOS command, and the DOS command has a function that can be registered by the user. First, all command character strings including commands registered by the user are stored in the memory (RAM) 3. When the operator inputs the first character of the command character string using the keyboard (KB) 4, the CPU 1 searches the command character string list in the memory (RAM) 3 for a command character string beginning with the input character and searches for the second character. The characters that can be input are determined and the L of the key switch 41
Turn on ED42.

Next, when the operator inputs the second character while observing the lighting state of the LED 42, the CPU 1 judges the character which can be input in the third character as described above, and the LED of the key switch of the character which can be input. Light up. Hereinafter, the same operation is repeated. For example, among the basic commands of DOS, the commands starting with "D" are "DATE,""D
There are four: "EL", "DIR", and "DISKCOPY". When the operator enters the first letter "D",
LED of three key switches of "A", "E", "I"
Lights up. When the operator inputs "I" as the second character, the LEDs of the two key switches "R" and "S" light up. As described above, the operator can quickly input the command character string while observing the lighting state of the LED.

[0013]

As described above, in the information input device of the present invention, when the operator inputs a command character string, LE
It is possible to input while watching the lighting state of D, and it is possible to prevent erroneous input of the command character string.

[Brief description of drawings]

FIG. 1 is a hardware configuration diagram according to an embodiment of the present invention.

2 is a schematic diagram of the keyboard of FIG. 1. FIG.

[Explanation of Codes] 1 ... CPU (Central Processing Unit), 2 ... Program Memory (ROM), 3 ... Memory (RAM), 4 ... Keyboard
(KB), 5 ... Display device such as CRT, 6 ... Bus, 41
… Key switch, 42… LED.

Claims (1)

[Claims] 1. An information input device for inputting commands by inputting a text character string from a keyboard, wherein a keyboard having LEDs built in all key switches and two characters when the first character of the command character string is input. A CPU having a command character string determination unit that automatically determines the characters that can be input after the second character, and when the first character of the command character string is input, the character that can be input as the second character is Judging by the command character string judgment unit, only the LED of the key switch of the characters that can be input is turned on, and the same operation is repeated for the third and subsequent characters, so that the operator inputs a command while watching the lighting state of the LED. An information input device characterized by being capable of performing.