JP2635473B2 - Electronics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus having a keyboard such as an electronic desk calculator.

[0002]

2. Description of the Related Art In a conventional electronic device such as an electronic desk calculator, a character or a character indicating the function of a key is marked on a keyboard surface corresponding to each key, and key input from the keyboard is performed. The structure is generally such that it is sent to an arithmetic control circuit in the device and arithmetically controlled, and the arithmetic result is displayed on a liquid crystal display or the like. Also, the keyboard has a mechanical movable part,
In other words, it is composed of a key top spring, a contact point, and a so-called touch key. For example, two sheets having elasticity are opposed to each other in parallel with a small space therebetween, and the opposed sheets are opposed to each other. For example, a switch pattern and a contact pattern formed on a surface are used.

[0003]

In the above-mentioned conventional electronic desk calculator, there is a tendency in recent years that:
In many cases, the function of the device can be changed or expanded by making an additional program storage unit such as a so-called ROM back detachable. However, in the conventional devices, it is necessary to provide a key switch corresponding to the number of attachable ROM backs to the keyboard, which has a drawback that the keyboard is complicated. In addition, since a large area cannot be allocated to the keyboard with a small device, if the number of key switches becomes large and complicated, the size of the key switches is inevitably reduced and the operability deteriorates. There is a disadvantage that the number of types of ROM packs to be attached cannot be increased in the device.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an additional ROM unit for expanding the function is detachably attached to the additional ROM unit. It is an object of the present invention to provide an electronic device that makes it possible to improve the operability of the device by giving an instruction corresponding to the character marked on the surface of the additional ROM unit. In order to solve this problem, an electronic device of the present invention has the following configuration. That is,

In an electronic apparatus having a connector for connecting an additional ROM unit for expanding functions, a display unit for displaying a plurality of pieces of first information to be inputted, and a display unit superimposed on the display unit A transparent sheet portion and a plurality of different additional ROMs for extending functions are removably inserted, and a part of the surface of the additional ROM unit functions as the additional ROM unit via the transparent sheet member. And a connector provided in the mounting portion for electrically connecting the additional unit, and a plurality of first information displayed on the display unit. A first detecting unit for detecting a corresponding position, and detecting a position corresponding to each of the plurality of second information marked on each of the plurality of different additional ROM units. That a second detection unit.

[0006]

In the configuration of the present invention, the first information transmitted through the transparent sheet and displayed on the display unit;
The position of each of the second information marked on the additional ROM unit is detected by the first and second detection units.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of the present invention. The embodiment shows a case where the present invention is applied to an electronic desk calculator. FIG. 1 is a plan view of an electronic desk calculator according to one embodiment of the present invention, and FIG.
3, FIG. 3 is a partially enlarged sectional view of the keyboard part, FIG. 4 is a perspective view of a ROM pack which is an additional program storage unit, and FIGS. FIG. 2 is a cross-sectional view of a ROM pack mounting portion of the desk-top computer and a diagram showing a method of mounting the ROM pack to its storage portion.

In each of the figures, 1 is an electronic desk calculator main body, 1-1 is an exterior, 2 is a keyboard part, 3 is a display part, and 4 is a power switch (common to the clear key and printed ON in the vicinity thereof. Is turned on, a character or character indicating the function of a key is displayed on the keyboard unit 2 by liquid crystal, 5 is a calculation result displayed on the display unit 3, 6 is a liquid crystal display, 7 is a printed circuit board, 7-1. Denotes an arithmetic control element, 8 denotes a power supply battery, 9 denotes a mounting portion of an additional program storage unit, 1
1 is a ROM pack, and 12 is a character or a character marked on the upper surface of the ROM pack 11. Keyboard part 2
Consists of a transparent keyboard integrally including a fixed keyboard section 2a on which characters are displayed when the power is turned on, and an additional keyboard 2b on which keys are displayed in accordance with the attached ROM pack.

The keyboard section 2 has two transparent sheets 2
-1, 2-2 (for example, a polyester sheet or the like) are arranged with a minute interval therebetween by sandwiching a spacer 2-5, and the mutually facing surfaces of the sheets 2-1 and 2-2 are determined. Key switches are formed by depositing transparent patterns 2-3 and 2-4 which can be in contact with each other as contact patterns at respective positions. This transparent pattern 2-
3, 2-4 are made of a member such as indium oxide. Also,
A liquid crystal display 6 is provided below the sheet 2-2 of the keyboard unit 2.
Are extended from the display unit 3 to a position just before the mounting unit 9 and are inserted and installed. The keyboard unit 2 of the liquid crystal display 6
A transparent pattern capable of displaying a character or a character indicating a function corresponding to each key switch is formed in a portion corresponding to the key switch, so that the character or the character can be displayed on a liquid crystal display.

Further, a printed circuit board 7 on which the arithmetic and control element 7-1 is mounted is disposed below the liquid crystal display 6, and a power supply battery 8 is accommodated in a part of the lower part of the printed circuit board 7. The sheets 2-1 and 2-2 and the printed circuit board 7 are electrically connected by a conductive connector or other means, and the liquid crystal display 6, the power battery 8 and the printed circuit board 7 are pressed against each other and electrically connected. Have been.

Thus, when the power switch (common to the clear key and printed on the keyboard in the vicinity of ON) is turned on, the above-described characters or characters are displayed in the portion corresponding to each key of the keyboard section 2 of the liquid crystal display 6. Characters are lit and the position and function of each key are transparent sheet 2-1
Is displayed through Then, by pressing a finger on the upper surface of the display portion, a predetermined key signal is input.

Next, a connector portion 10 having a terminal 10-1 for electrically connecting the main body 1 and the ROM pack 11 is provided in the mounting portion 9 of the ROM pack 11. The above-mentioned keyboard unit 2 is located above the mounting unit 9. By storing the ROM pack 11 in the mounting portion 9, characters or characters 12 indicating the function of the ROM pack 11 marked on the upper surface of the ROM pack 11 can be visually recognized through the keyboard portion 2. Further, a key switch for inputting a key signal indicated by the character or the character 12 is formed on the keyboard 2 on which the character or the character 12 on the upper surface of the ROM pack 11 stored in the mounting portion 9 is displayed in the same manner as described above. I have. Note that this key switch is a RO switch having other functions.
It is needless to say that when an M pack is attached, a key signal corresponding to a character or a character marked on the upper surface of the ROM pack can be input.

As described above, the ROM pack 1 is
The key signal indicated by the character or character 12 can be input by pressing the keyboard portion corresponding to the character or character 12 marked on the ROM pack 11. Therefore, even if a plurality of ROM packs 11 are replaced and connected, the key switches on the keyboard unit 2 for inputting key signals need only be for one ROM pack.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. Needless to say, the present invention can be applied to a case where the present invention is achieved by supplying a program to a system or an apparatus.

[0015]

As described above, according to the present invention, an additional ROM unit for expanding the function is detachably mounted, and the characters marked on the surface of each additional ROM unit can be seen through. Then, instructions corresponding to the characters marked on the surface of the additional ROM unit are given, and the operability of the device can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of an electronic desk calculator according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a partially enlarged sectional view of a keyboard unit.

FIG. 4 is a perspective view of a ROM pack which is an additional program storage unit.

FIG. 5 is a sectional view of a ROM pack mounting portion of the electronic desk calculator according to the embodiment and a diagram showing a method of mounting the ROM pack to the mounting portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Electronic desk computer main body 1-1 ... Exterior, 2 ... Keyboard part, 2a- Fixed keyboard part, 2b--Additional keyboard, 2-1 and 2-2 ... Transparent sheet, 2-3 and 2-4 ... Transparent pattern, 6 ... Liquid crystal display, 9 ... ROM pack mounting part, 10 ... Connector part, 10-1 ... Connection terminal, 11 ... ROM pack, 12 ... Character or character.

Claims (1)

(57) [Claims] 1. An electronic device having a connector for connecting an additional ROM unit for expanding functions, a display unit for displaying a plurality of pieces of first information to be input, and A transparent sheet portion and a plurality of different additional ROMs for extending functions are removably inserted, and a part of the surface of the additional ROM unit is connected to the additional RO through the transparent sheet member.
An attachment part through which second information representing the function of the M unit is transmitted; a connector provided in the attachment part for electrically connecting to the additional unit; and the plurality of first units displayed on the display unit A first detector for detecting a position corresponding to each of the information; and a second detector for detecting a position corresponding to each of the plurality of second information marked on each of the plurality of different additional ROM units. An electronic device comprising: