JPS62224838A - Diagnosis device for electronic desktop calculator - Google Patents

Abstract

PURPOSE:To easily detect failure in terms of controlling and processing by conducting the fluctuation of a DC voltage in a diagnosis control action. CONSTITUTION:The electronic desktop calculator 8 is provided with a power source control mechanism 7 that causes the output voltage of a DC power source to fluctuate according to a power source control command transmitted from a main body 2 through a power source control instructing line (a). At the time of rising, the main body 2 enters an initial activation action due to the supply of a DC voltage from the control mechanism 7, and further enters a diagnosis action. By this action the main body 2 instructs the control mechanism 7 to attain a high DC voltage margin, and executes its diagnosis control action. When this action correctly ends, the main body 2 instructs a low DC voltage margin, and executes its diagnosis action. When the margin of the DC voltage is made to fluctuate in the initial diagnosis action of the computer 2, the speed of a logic action fluctuates with defective elements mixed. Accordingly an illegal action can be easily detected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a diagnostic device for an electronic desktop computer that varies the voltage supplied to the computer and diagnoses abnormalities occurring in the computer.

[Prior Art] As a conventional electronic desk calculator a (hereinafter simply referred to as "electronic desk calculator") with an internal control program function, there is one shown in FIG. 3, for example. In FIG. 3, the electronic desktop calculator (6) is mainly composed of a main body (2). This main body (2) includes a display mechanism (1), a key operation console (
3), an external storage device (4), and a power supply control mechanism (5) are respectively connected.

Among these, the CRT display mechanism (1) has a main body (2) when the operator operates the key operation console (3).
Programs, data, etc. output from are displayed. The main body (2) executes arithmetic processing and a program control device. The key console (3) is used, for example, to input a control code for an operator to give control instructions to the main body (2).

The external storage device (4) stores various control programs necessary for arithmetic control processing. Power control mechanism (5)
The system controls power on and off of the entire system based on manual operations by the operator.

Next, the operation of one or more conventional examples will be explained. When the operator operates a power on/off switch (not shown) provided in the power control mechanism (5) based on a request to use the electronic desk calculator (6), the power control mechanism (5) changes the output voltage. Start regulation.

With the start of this regulation, DC power is supplied to the display mechanism (1), key console (3), and external storage device (4). Then, after the power supply initial start-up time has elapsed, the main body (2) starts the initial start-up program, reads the control program from the external storage device (4), and starts executing a predetermined control process.

[Problem to be Solved by the Invention 1] As explained above, in the conventional electronic desktop calculator with an internal control program function, the regulation of the power control mechanism is started by the operation of the power on/off switch by the operator himself, and DC voltage power is supplied and control processing begins.

Therefore, if any of the components of the electronic desk calculator contain parts with defective voltage characteristics or parts near the end of their service life,
There is a problem in that an instantaneous error occurs during the control process executed with a constant voltage, making it impossible to obtain important control process results.

This invention was made to solve the above-mentioned problems, and by understanding in advance abnormal situations caused by defective parts of the computer, unexpected °dG errors such as occurrence of errors during control processing due to the appearance of abnormal elements can be avoided. The purpose of the present invention is to obtain a diagnostic device for an electronic desktop calculator that can avoid such situations.

[Means for Solving the Problems] The present invention provides a diagnostic device for an electronic desktop computer, which includes means for checking whether the control process is correctly executed in the initial start-up control process of the electronic desktop computer, and a power source supplied from a power control mechanism. The invention is characterized by comprising a means for changing the voltage of the DC power supply according to a control program.

[Function] According to the present invention, in the initial start-up control process of the electronic desktop calculator, the voltage of the DC power supply is varied by the control program, the control program is executed, and it is confirmed whether the control process is executed correctly. It is possible to easily extract components with defective characteristics and end-of-life components of computer components.

[Embodiment] FIG. 1 is an overall configuration diagram of an embodiment of a diagnostic device for an electronic desktop computer according to the present invention. As is clear from FIG. 1, this embodiment has a control circuit (2) that controls peripheral equipment (display mechanism (1), key console (3), external storage device (4)).
A), control program with diagnostic program (2B)
, according to the diagnostic program (2B), the control circuit (
voltage fluctuation command means (2C) for commanding output fluctuations of a power supply control mechanism (7) for supplying power to 2A), and control operation diagnostic means (2D) for diagnosing the operation of the control circuit due to fluctuations in the power supply voltage. , By these means, electronic desk calculators (
2).

Hereinafter, embodiments of the present invention will be described with reference to FIG. FIG. 2 is a configuration diagram of a computer system to which this embodiment is applied.

Note that the same reference numerals are used for the same components as in the conventional example described above.

In Figure 2, the electronic desktop calculator (8) has a function to vary the output voltage of the DC power supply in accordance with the power control instructions sent from the electronic desktop computer main body (2) via the power control instruction line (a). A power supply control mechanism (7) is provided. When the operator turns on the power to the electronic desk calculator m (8), he turns on the power on/off switch provided in the power control mechanism (7) to start up the electronic desk calculator (8).

The power control mechanism (7) starts regulation in response to a power-on instruction, and a predetermined initial DC voltage is supplied to the electronic desktop computer main body (2). The electronic desk calculator main body (2) enters an initial startup operation by supplying DC voltage, and enters a diagnostic operation to check whether each function of the electronic desk calculator (8) operates correctly. In this diagnostic operation, the electronic desktop computer main body (2) instructs the power supply control mechanism (7) to set the DC voltage margin old gh (+5.5V) and executes the diagnostic control operation.

When this operation is completed correctly, the DC voltage margin is Low (
÷4.5V) and executes the diagnostic operation. This 2
When the two diagnostic operations are completed correctly, the electronic desktop calculator (
2) is a DC voltage margin Nor in the power supply control mechanism (7).
Give the mal(+5.OV) instruction and finish the diagnostic operation,
Enter normal control processing operation.

As described above, in the initial diagnostic operation of the electronic desktop calculator (2), by changing the voltage margin of the DC voltage, if there are elements with insufficient voltage margin or elements that have reached the end of their lifespan, the DC voltage margin can be changed. This has the advantage that the logical operation speed changes, making it easier to detect illegal operations.

Next, the overall operation of the above embodiment will be explained. first,
The operator turns on the power on/off switch of the power control mechanism (7) to cause the power control mechanism (7) to start DC voltage regulation and supply DC voltage to the electronic desktop computer main body (2). The electronic desktop computer main body (2) starts startup control by supplying DC voltage. Next, the diagnostic control operation begins, and zero-order control is performed by transmitting and receiving diagnostic information and checking whether the key console (3), external storage mechanism (4), and display mechanism (1) are operating correctly. A power supply control instruction line (a) is sent to give a DC voltage margin old gh instruction to the power supply control mechanism (7). This allows the power control mechanism (
Step 7) sets the DC voltage to 5.5V and sends a fluctuation completion report to the electronic desk calculator main body (2) through the power control instruction line (a). In response to this variation completion report, the electronic desktop computer main body (2) executes the above-described diagnostic control operation again. Then, similarly, a diagnostic control operation is performed with a low DC voltage margin. When this DC voltage margin Low operation is completed, the electronic desk calculator main body (2) will be connected to the power control instruction line (
Instruct the DC voltage margin Normal through a),
Enter normal control processing operation.

[Effects of the Invention] As explained above, according to the electronic desktop calculator of the present invention, by varying the DC voltage in the diagnostic control operation, even if elements sensitive to voltage fluctuations are mixed in, the electronic desktop calculator can be easily controlled. Since processing failures can be detected, the reliability of electronic desktop calculators can be improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the overall configuration of a diagnostic device for an electronic desktop computer according to an embodiment of the present invention, FIG. 2 is a block diagram showing a computer system to which this embodiment is applied, and FIG. 3 is a block diagram showing a conventional electronic desk calculator FIG. 1 is a system block diagram showing an example of a computer. In the figure, (2) is the main body of the electronic desktop calculator, and (2A) is the control circuit. (2B) is a control program including a diagnostic program;
G) is a voltage fluctuation command means, (2D) is a control operation diagnosis means, and (7) is a power supply control mechanism. In each figure, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiwa Figure 2

Claims (1)

[Claims] In an electronic desktop computer with an internal control program function that has a pre-built-in control program that starts the control circuit inside the computer, the above diagnostic program diagnoses the effect that occurs on the control circuit due to fluctuations in the power supply voltage of the computer during initial startup control of the computer. In preparation for the control program, the power source control device includes voltage fluctuation command means for commanding output fluctuations of a power supply control mechanism that supplies power to the computer according to the diagnostic program, and control operation diagnostic means for diagnosing the operation of the control circuit due to fluctuations in the power supply voltage. A diagnostic device for an electronic desktop calculator characterized by: