JPH05134840A - Personal computer - Google Patents

Abstract

PURPOSE:To easily change the type of characters or the like only by exchanging a memory card for character data by constituting a character data memory part by inserting and connecting one of plural memory cards. CONSTITUTION:This personal computer is provided with a memory card connection part 14 to connect a memory part 16 for character data with an address/ data bus 12, and a memory card 15 for character data to store font data and to read the stored font data according to the instruction of a CPU 11 while being inserted and connected to the memory card connection part 14. These memory card 15 are plural cards to store the font data having the respectively different types of characters, and one of those cards is selected, inserted and connected to the memory card connection part 14. Thus, the memory card 15 can be connected to the memory card connection part 14 connected to the address/ data bus 12 in a main body 1 of the computer, and the font data of characters are read from the connected memory card 15 according to the instruction from the CPU 11, recognized and transmitted to a display part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal computer, and more particularly to a personal computer having a function of displaying various characters on a display screen or an external device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, as an example, a personal computer of this type stores a program or data in accordance with an instruction from a CPU 11 or a main memory unit 13 for reading the stored program or data. , CP that stores font data that makes up various characters
A character data memory unit 16a for reading the data according to the instruction of U11, an input / output control unit 17 for controlling an input / output signal,
Also, a computer main body 1a having an address / data bus 12 of an internal bus for transmitting address signals, data and the like between these respective parts, a keyboard 2 for inputting operation instructions and data of the computer main body 1a, and a computer main body 1a The various display images including characters are displayed by the display signal including the character signal based on the font data from C.
The display unit 3 such as RT is provided.

The font data in the character data memory section 16a is temporarily stored in the V-RAM of the main memory section 13.
And is transmitted to the display unit 3 as a character signal. The character data memory unit 16a is used for the computer main body 1a.
Fixedly embedded in the
It is formed by M.

[0004]

In this conventional personal computer, the character font data is masked by the mask R.
Formed by OM and stored in the character data memory unit 16a,
Since this is fixedly incorporated in the computer main body, it is difficult to change the type of characters and the like to those that are not in the character data memory section 16a.

Further, there is a method of creating / displaying by software as a method of changing the type of characters, etc., but this method has a problem that the processing takes time due to the internal calculation.

An object of the present invention is to provide a personal computer in which the type of characters can be changed easily.

[0007]

A personal computer of the present invention stores a character data memory unit for storing font data forming various characters and reading the stored font data according to an instruction from a CPU. And a computer main body having an internal bus connected to each unit including the CPU and the character data memory unit and transmitting a signal between these units, and a display signal including a character signal based on the font data from the computer main unit. A personal computer having a display unit for displaying various images including characters
In the computer, the memory unit for character data is
A memory card connection unit connected to the internal bus, and a character data memory card that stores the font data and is inserted and connected to the memory card connection unit to read the stored font data according to an instruction from the CPU. And is configured.

Further, the character data memory card is a plurality of sheets for storing font data of different types of characters, and one of the plurality of character data memory cards is selected and inserted into the memory card connection portion. It has a configuration.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.

This embodiment is different from the conventional personal computer shown in FIG. 3 in that the character data memory section 16 is connected to the address / data bus 12 and the memory card connection section 14 is connected to the font data. A character data memory card 15 that is stored and inserted into the memory card connection unit 14 to read the stored font data according to an instruction from the CPU 11 is provided. The character data memory cards 15 are different from each other. A plurality of font data of character types are stored, and one of the plurality of character data memory cards 15 is selected and inserted and connected to the memory card connection unit 14.

FIG. 2 is an external perspective view of the computer main body 1 and the display unit 2 of this embodiment.

The character data memory card 15 can be connected to the memory card connection section 14 connected to the address / data bus 12 of the computer main body 1, and the character data memory connected by an instruction from the CPU 11 Character font data is read out from the card 15 and recognized, and transmitted as a character signal to the display unit 3 via the input / output control unit 17, and the display unit 3 displays this as a character on the screen.

By replacing the character data memory card 15, it is possible to display characters having different character font patterns. On the front panel of the computer main body 1, a memory card connecting portion 14 directly connected to the address / data bus 12 is prepared. Therefore, the type of characters can be changed very easily.

[0015]

As described above, according to the present invention, the character data memory unit includes a plurality of character data memory cards and a memory card connecting unit into which one of the character data memory cards is inserted and connected. With the configuration provided, the character type and the like can be changed only by replacing the character data memory card, so that the character type and the like can be changed very easily.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

2 is an external perspective view of the embodiment shown in FIG. 1. FIG.

FIG. 3 is a block diagram showing an example of a conventional personal computer.

[Explanation of symbols]

 1, 1a computer main body 2 keyboard 3 display unit 11 CPU 12 address / data bus 13 main memory unit 14 memory card connection unit 15 character data memory card 16, 16a character data memory unit 17 input / output control unit

Claims (2)

[Claims] 1. A character data memory unit for storing font data forming various characters and reading the stored font data according to an instruction from a CPU, and each unit including the CPU and the character data memory unit. A computer main body equipped with an internal bus for transmitting signals between these units and a display unit for displaying various images including characters by a display signal including a character signal based on the font data from the computer main unit. Own personal
In the computer, the memory unit for character data is
A memory card connection unit connected to the internal bus, and a character data memory card that stores the font data and is inserted and connected to the memory card connection unit to read the stored font data according to an instruction from the CPU. A personal computer comprising: and. 2. A plurality of character data memory cards for storing font data of different types of characters, respectively, and one of the plurality of character data memory cards is selected and inserted into the memory card connection portion. The personal computer according to claim 1, which is configured to: