JP2008140238A - Electric device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric device displaying a first warning screen showing that a flash memory is almost useless and a second warning screen showing that the nonvolatile memory has reached the end of its life. <P>SOLUTION: When the number of rewrite of the flash memory approaches a cyclability, the first warning screen of a message showing that the flash memory is almost useless is displayed on a display device. When the rewrite count exceeds the cyclability, the second warning screen of a message showing that the flash memory has reached the end of its life is displayed on the display device, thereby notifying that the flash memory is almost useless or has reached the end of its life. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electric device including a CPU (Central Processing Unit) that controls the entire device and a rewritable nonvolatile memory that stores data necessary for data processing and control performed by the CPU. The present invention relates to processing for warning the number of times of rewriting of a volatile memory.

  2. Description of the Related Art Conventionally, electric devices such as a hard disk device, an optical disk device, a personal computer, a copying machine, and a printer have a flash memory that is a rewritable nonvolatile memory that stores data necessary for data processing and control. In this flash memory, data is written, read, or rewritten by the CPU, but the data is rewritten after the number of rewrites guaranteed by the manufacturer comes over while being rewritten many times. And the electrical equipment becomes inoperable.

  Therefore, in the prior art of Patent Document 1, it is determined that rewrite determination means for determining that the storage contents of the storage means (flash memory) has been rewritten, and that the contents of the storage means have been rewritten by the rewrite determination means. And a display means for displaying a warning when the rewrite count value approaches a predetermined number of the rewrite count limit value of the storage means. A warning is displayed before becomes the limit value.

Further, in the prior art of Patent Document 2, a reading unit that reads information and the number of updates from a nonvolatile memory when power is turned on, a comparison unit that compares the number of updates with a predetermined threshold value, and a nonvolatile unit according to the comparison result of the comparison unit A message indicating that it is time to replace the nonvolatile memory when the number of times the nonvolatile memory has been written (number of times of rewriting) exceeds a predetermined number. Is displayed.
JP-A-10-187548 JP 2000-29793 A

  However, the prior art of Patent Document 1 displays a warning before the number of rewrites of the storage means reaches the limit value, but depending on the limit value setting value, the life of the nonvolatile memory is approaching. There is no distinction between saying that the lifetime of the non-volatile memory has expired, so the user should send the device to the manufacturer in the near future to have the non-volatile memory replaced, or a new device It is difficult to know whether to replace the non-volatile memory by sending the device to the manufacturer immediately, or to replace it with a new device immediately. There arises a problem that there are cases where it is not possible to adapt to.

  Further, the prior art of Patent Document 2 displays a message indicating that it is time to replace the nonvolatile memory when the number of times of writing (rewriting number) of the nonvolatile memory exceeds a predetermined number. However, depending on the setting value of the predetermined number of times, it is impossible to distinguish whether the life of the nonvolatile memory is approaching or whether the life of the nonvolatile memory is expired, so the user is close Send the device to the manufacturer and have it replace the non-volatile memory or replace it with a new device, or send the device to the manufacturer as soon as possible to have the non-volatile memory replaced, or immediately There is a problem that there is a case where it may not be possible to adapt to the convenience of the user because it is not known which of the measures to replace with a new device should be executed.

  The present invention has been made to solve the above-described problems, and includes a first warning screen indicating that the life of the nonvolatile memory is approaching, and a second saying that the life of the nonvolatile memory is expired. It is an object of the present invention to provide an electric device that can display a warning screen.

  In order to achieve the above object, according to the first aspect of the present invention, when data rewriting to the nonvolatile memory is completed and completed, 1 is added to the number of times of rewriting and data rewriting to the nonvolatile memory is performed. A rewrite count counting means for counting the number of rewrites, a rewrite count storage processing means for storing the rewrite count in the nonvolatile memory, and whether the rewrite count is less than a predetermined upper limit value and exceeding a predetermined percentage of the upper limit value. When it is determined that the number of rewrites is equal to or less than a predetermined upper limit value and exceeds a predetermined percentage of the upper limit value, the lifetime of the nonvolatile memory is approaching. First warning screen display processing means for displaying a first warning screen of a message saying on the display means, and an upper limit value in which the number of rewrites is predetermined. A second rewrite count determination means for determining whether or not the rewrite count exceeds the predetermined upper limit, and a message that the lifetime of the nonvolatile memory has expired The second warning screen display processing means for displaying the second warning screen on the display means is provided in the central processing unit.

  In this configuration, when the rewrite processing of the nonvolatile memory occurs, the rewrite count adding means of the central processing unit adds 1 to the rewrite count when data rewrite to the nonvolatile memory is completed. Then, the number of rewrites of data to the nonvolatile memory is counted, and the rewrite number storage processing means of the central processing unit stores the number of rewrites in the nonvolatile memory. Thereafter, the first rewrite count determination means of the central processing unit determines whether or not the rewrite count is equal to or less than a predetermined upper limit value and exceeds a predetermined percentage of the upper limit value. When it is determined that the number of rewrites is less than or equal to a predetermined upper limit value and exceeds a predetermined percentage of the upper limit value, the first warning screen display processing means of the central processing unit is nearing the end of its non-volatile memory life. A first warning screen of a message saying “Yes” is displayed on the display means.

  When it is not determined that the number of rewrites is equal to or less than a predetermined upper limit value and exceeds a predetermined percentage of the upper limit value, the second rewrite number determination unit of the central processing unit has the predetermined number of rewrites It is determined whether or not the upper limit value is exceeded. When it is determined that the number of rewrites exceeds a predetermined upper limit, the second warning screen display processing means of the central processing unit displays a second message indicating that the lifetime of the nonvolatile memory has expired. The warning screen is displayed on the display means.

  According to this configuration, the user who has seen the first warning screen with a message saying that the non-volatile memory is nearing end of life knows that the non-volatile memory built into his / her own electrical device is nearing end of life. In this state, since it cannot be used for a long time, it is possible to take measures to send the electric device to the manufacturer in the near future and have the nonvolatile memory replaced or replaced with a new electric device. In addition, the user who sees the second warning screen with the message that the lifetime of the nonvolatile memory has expired knows that the nonvolatile memory built into the electric device owned by the user has exceeded the original lifetime, and remains as it is. In the state of, it is not known when the operation of the electrical equipment will become abnormal, so whether to send the electrical equipment to the manufacturer immediately and have the non-volatile memory replaced, or to replace the electrical equipment with a new one immediately You will know that you have to take. Therefore, the user can cope with the situation according to his / her convenience, and can prevent a sudden trouble that the data cannot be saved.

  In the invention of claim 2, the central processing unit constantly monitors and counts the number of times of rewriting the data in the nonvolatile memory, and when the counted number of times of rewriting approaches the upper limit number of times of rewriting of the nonvolatile memory. A first warning screen with a message saying that the lifetime of the nonvolatile memory is approaching is displayed on the display means, and further, when the counted number of times of rewriting exceeds the upper limit number of times of rewriting of the nonvolatile memory And providing a second warning screen of a message saying that the non-volatile memory has expired on the display means.

  In this configuration, when the number of data rewrites in the nonvolatile memory approaches the upper limit number of rewrites, a first warning screen with a message that the life of the nonvolatile memory is approaching is displayed on the display means. Furthermore, when the number of times of rewriting exceeds the upper limit number of times of rewriting of the nonvolatile memory, a second warning screen of a message that the life of the nonvolatile memory has expired is displayed on the display means.

  The user who sees the first warning screen with a message saying that the non-volatile memory is approaching its end of life, knows that its own non-volatile memory is approaching its end of life. Since it cannot be used for a long time, it is possible to take measures to send an electric device to the manufacturer in the near future and have the non-volatile memory replaced or replaced with a new electric device. In addition, the user who sees the second warning screen with the message that the lifetime of the nonvolatile memory has expired knows that the nonvolatile memory built into the electric device owned by the user has exceeded the original lifetime, and remains as it is. In the state of, it is not known when the operation of the electrical equipment will become abnormal, so whether to send the electrical equipment to the manufacturer immediately and have the non-volatile memory replaced, or to replace the electrical equipment with a new one immediately You will know that you have to take. Therefore, the user can cope with the situation according to his / her convenience, and can prevent a sudden trouble that the data cannot be saved.

  According to the invention of claim 3, in the invention of claim 2, the central processing unit adds 1 to the number of rewrites to the non-volatile memory when data rewrite to the non-volatile memory is completed. Rewrite count counting means for counting the number of rewrites of the data, rewrite count storage processing means for storing the rewrite count in the nonvolatile memory, and a predetermined percentage of the upper limit value when the rewrite count is equal to or less than a predetermined upper limit value. A first rewrite count determination means for determining whether or not the maximum number of rewrites, and when it is determined that the number of rewrites is equal to or less than a predetermined upper limit and exceeds a predetermined percentage of the upper limit, A first warning screen display processing means for displaying on the display means a first warning screen of a message saying that is approaching; A second rewrite count determining means for determining whether or not the determined upper limit is exceeded, and when it is determined that the rewrite count exceeds a predetermined upper limit, the lifetime of the nonvolatile memory is And a second warning screen display processing means for causing the display means to display a second warning screen of a message saying that it has expired.

  Therefore, the central processing unit performs a rewrite count process, a rewrite count storage process, a first rewrite count determination process, a first warning screen display process, a second rewrite count determination process, and a second warning screen display. The process can be realized, so that it is possible to display the first warning screen of the message that the non-volatile memory is nearing the end of its life, and the message that the non-volatile memory is about to expire The second warning screen can be displayed.

  As described above, according to the present invention, the user who has seen the first warning screen with the message that the non-volatile memory is nearing the end of its life is nearing the end of the life of the non-volatile memory built into his / her own electric device. In this state, it can not be used for a long time, so you can send an electrical device to the manufacturer in the near future and replace the non-volatile memory, or take measures to replace it with a new one . In addition, the user who sees the second warning screen with the message that the lifetime of the nonvolatile memory has expired knows that the nonvolatile memory built into the electric device owned by the user has exceeded the original lifetime, and remains as it is. In the state of, it is not known when the operation of the electrical equipment will become abnormal, so whether to send the electrical equipment to the manufacturer immediately and have the non-volatile memory replaced, or to replace the electrical equipment with a new one immediately You will know that you have to take. Therefore, the user can cope with the situation according to his / her convenience, and can prevent a sudden trouble that the data cannot be saved.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a composite type recording / reproducing apparatus as an electric apparatus according to an embodiment of the present invention. Here, a description will be given of a composite recording / reproducing apparatus in which a hard disk device and an optical disk device are incorporated as electrical equipment. However, the present invention is not limited to the composite recording / reproducing apparatus, and a single hard disk device, optical disk device, or The present invention can be applied to any electric device provided with a non-volatile memory, such as a personal computer, a copying machine, and a printer.

  In FIG. 1, a composite recording / reproducing apparatus 1 includes an optical disc apparatus 2 that records / reproduces information with respect to an optical disc 15 such as a DVD or a CD, and an HDD that records / reproduces information with respect to an HD (hard disk) 14. A hard disk device 3 that is a (hard disk drive), a tuner 4 that receives a television broadcast signal from an antenna (not shown), selects a television broadcast signal of a desired channel and outputs it as a video / audio signal, and a system that controls the entire device A controller 10, a decoder 5 that decodes a video / audio signal output from the optical disk device 2, the hard disk device 3, or the tuner 4, and a display device of a monitor device (such as a television receiver) 13 that decodes the video signal decoded by the decoder 5. A video output unit 7 for converting into a video signal that can be displayed at 131; An OSD circuit 12 for displaying a warning screen, a second warning screen, or the like on the display device 131 of the monitor device 13, and a sound signal decoded by the decoder 5 is converted into a sound signal that can be output by the speaker 132 of the monitor device 13. Receiving the various command signals of the infrared light transmitted from the audio output unit 8 and the remote controller 11, converting the received infrared light command signal into a command signal of an electrical signal, and converting the command signal into the system controller 10 And a remote control receiver 9 for inputting to the remote control.

  The system controller 10 includes a CPU (Central Processing Unit) 16, a RAM 17, and a flash memory 6. The flash memory 6 is a rewritable memory that stores device-specific information and broadcast channels that can be received by the tuner 4 and stores programs necessary for the operation of the CPU 16. The RAM 17 is a random access memory that temporarily stores data necessary for calculation and control in the CPU 16.

  The CPU 16 rewrites data to the flash memory 6 and completes the rewrite count counting means for adding 1 to the rewrite count and counting the data rewrite count to the flash memory 6 when the rewrite is completed. A rewrite count storage processing means to be stored in the flash memory 6 and a first judgment for determining whether or not the rewrite count is not more than a predetermined upper limit value (rewrite upper limit count) and exceeds a predetermined percentage (for example, 90%) of the upper limit value. 1 rewrite count determination means, and a first rewrite count determination that determines whether the rewrite count is equal to or less than a predetermined upper limit value (rewrite upper limit count) and exceeds a predetermined percentage (for example, 90 percent) of the upper limit value Means and the upper limit value is less than a predetermined upper limit value (rewrite upper limit number). When it is determined that the percentage is exceeded, the first warning screen is displayed on the display means (for example, the display device 131 of the monitor device 13) with a message indicating that the life of the flash memory 6 is approaching. Display processing means; second rewrite count determining means for determining whether or not the rewrite count exceeds a predetermined upper limit; and the rewrite count exceeds a predetermined upper limit (rewrite upper limit count). And a second warning screen display processing means for causing the display means to display a second warning screen of a message that the life of the flash memory 6 has expired.

  FIG. 2 is a diagram for explaining the content of the first warning screen displayed on the display device in the present embodiment. This first warning screen A says, “The flash memory is nearing its end of life! If you keep it as it is, you will not be able to save data and normal operation cannot be guaranteed. We recommend replacement or replacement.” A message is displayed. Therefore, the user who sees this message knows that the built-in flash memory is nearing the end of its life in his / her own electric device (in this example, the composite recording / reproducing apparatus), and cannot be used for a long time in this state. Therefore, it is possible to take measures to send the composite recording / reproducing apparatus to the manufacturer in the near future and have the flash memory replaced, or to purchase a new composite recording / reproducing apparatus.

  FIG. 3 is a diagram for explaining the content of the second warning screen displayed on the display device in the present embodiment. On the second warning screen B, the message “The flash memory has expired! The normal operation of the device cannot be guaranteed under the current conditions, so we recommend that you replace or replace it promptly.” Is displayed. Therefore, the user who sees this message knows that the built-in flash memory in the electrical equipment he owns (in this example, the composite recording / playback device) has exceeded its original life. Since it is not known when the operation of the mold recording / reproducing device will become abnormal, send the composite recording / reproducing device to the manufacturer as soon as possible and have the flash memory replaced, or replace it with a new one. I know that I have to take such measures.

  FIG. 4 is a flowchart for explaining display processing of a warning screen regarding the lifetime of the flash memory in the composite recording / reproducing apparatus of the present embodiment. With reference to this flowchart and FIGS. 1 to 3, a display process of a warning screen regarding the lifetime of the flash memory will be described.

  First, in order to turn on the apparatus, when the user presses the power key of the remote controller 11 or a main body operation unit (not shown), the system controller 10 turns on the apparatus (main power). Thereby, CPU16 detects that the power supply of the apparatus was turned on (step S1). The system controller 10 can be operated by a standby power supply before the apparatus power supply (main power supply) is turned on.

  After the apparatus is turned on, for example, when the DVD mode switching key of the remote controller 11 is pressed to set the DVD mode and then the playback key of the remote controller 11 is pressed, the system controller 10 reproduces the optical disk apparatus 2. The information recorded on the optical disk 15 is read out by operating. Further, for example, when the HDD mode switching key of the remote controller 11 is pressed to set the HDD mode, and then the playback key of the remote controller 11 is pressed, the system controller 10 causes the hard disk device 3 to perform a playback operation and is recorded on the HD 14. Read the information. Also, for example, when the DVD mode switching key of the remote controller 11 is pressed to set the DVD mode, and then the recording key of the remote controller 11 is pressed, the system controller 10 causes the optical disk device 2 to perform a recording operation and To record. Further, for example, when the HDD mode switching key of the remote controller 11 is pressed to set the HDD mode, and then the recording key of the remote controller 11 is pressed, the system controller 10 causes the hard disk device 3 to perform a recording operation and sends information to the HD 14. Let me record.

  In such a reproducing operation and recording operation, a process of writing data to the flash memory 6, reading data, or rewriting to change the written data is performed. Also, in the setting of various information data (language setting, TV terminal setting), the setting of various information data to the flash memory 6 is performed, and when the setting contents are changed, the flash memory 6 stores the data of the data. Rewriting is performed. Further, during the recording operation of the TV program, information such as the channel of the program to be recorded, the program name, and the recording date and time are also temporarily stored in the flash memory 6, and the recording of the program ends and the next TV program to be recorded is recorded. However, when information such as the channel, program name, and recording date / time is written into the flash memory 6, the data in the flash memory 6 is overwritten by information such as the channel, program name, and recording date / time for the previous recorded program. Will be rewritten.

  When rewriting processing of the flash memory 6 occurs during reproduction operation, recording operation, setting operation, etc., the CPU 16 of the system controller 10 detects that the rewriting processing of the flash memory 6 has occurred (step S2), and transfers to the flash memory 6. The data rewriting process is executed (step S3). Then, the rewrite count adding means of the CPU 16 adds 1 to the rewrite count when the data rewrite to the flash memory 6 is completed (step S4), and sets the rewrite count of the data to the flash memory 6. Count and store the number of rewrites in the flash memory 6.

  Thereafter, the first rewrite count determination means of the CPU 16 determines whether or not the rewrite count is equal to or less than a predetermined upper limit value and exceeds a predetermined percentage (for example, 90%) of the upper limit value (step S5). When it is determined that the number of rewrites is not more than a predetermined upper limit value and exceeds a predetermined percentage (for example, 90%) of the upper limit value, the first warning screen display processing means of the CPU 16 is stored in the flash memory 6 in advance. When the first warning screen data is read out, OSD processing is performed by the OSD circuit 12, and further converted into a video signal that can be displayed on the display device 131 by the video output unit 7, and the life of the flash memory 6 is approaching. The first warning screen A of the message is displayed on the display device 131 (step S6).

  This first warning screen A says, “The flash memory is nearing its end of life! If you keep it as it is, you will not be able to save data and normal operation cannot be guaranteed. We recommend replacement or replacement.” A message is displayed. Therefore, the user who sees this message knows that the built-in flash memory 6 is approaching the end of its life in his / her own composite recording / reproducing apparatus 1 and cannot be used for a long time in this state. It is possible to take measures to send the recording / reproducing apparatus 1 to the maker and have the flash memory 6 replaced or to purchase a new composite recording / reproducing apparatus.

  When it is not determined that the number of rewrites is equal to or less than a predetermined upper limit value and exceeds a predetermined percentage of the upper limit value (step S5), the second rewrite number determination unit of the CPU 16 determines the rewrite number in advance. It is determined whether the upper limit is exceeded (step S7). When it is determined that the number of times of rewriting exceeds a predetermined upper limit value, the second warning screen display processing means of the CPU 16 reads the second warning screen data stored in advance in the flash memory 6, The OSD process is performed by the OSD circuit 12, and further, the video output unit 7 converts the signal into a video signal that can be displayed on the display device 131, and displays a second warning screen B with a message that the life of the flash memory 6 has expired. It is displayed on the device 131 (step S8).

  On the second warning screen B, the message “The flash memory has expired! The normal operation of the device cannot be guaranteed under the current conditions, so we recommend that you replace or replace it promptly.” Is displayed. Accordingly, the user who sees this message knows that the built-in flash memory 6 of the composite recording / reproducing apparatus 1 owned by the user has exceeded the original life, and in this state, the operation of the composite recording / reproducing apparatus 1 is continued. However, since it is not known when it becomes abnormal, it is necessary to take measures to immediately send the composite recording / reproducing apparatus 1 to the manufacturer and have the flash memory 6 replaced or replaced with a new composite recording / reproducing apparatus. You will know what you have to do.

  When power-on is detected (step S1) and no rewriting process has occurred (step S2), the process proceeds to step S5, where the number of rewrites is equal to or less than a predetermined upper limit value and a predetermined percentage of the upper limit value ( For example, when it is determined that it exceeds 90%, the first warning screen display processing unit of the CPU 16 displays the first warning screen A on the display device 131 (step S6). Further, when it is determined that the number of rewrites exceeds a predetermined upper limit value, the second warning screen display processing means of the CPU 16 displays the second warning screen B on the display device 131 (step S8). . Therefore, when the apparatus is turned on, the first warning screen A or the first warning screen B is displayed on the display device 131, or the number of rewrites is equal to or less than a predetermined percentage (for example, 90%) of the upper limit value. Since the warning screen is not displayed (step S9), the user can immediately know the life state of the flash memory 6.

  As described above, according to the present embodiment, the user who sees the first warning screen A of the message that the life of the flash memory 6 is approaching is used. Knowing that the memory 6 is nearing the end of its life, it cannot be used for a long time in this state, so the composite recording / reproducing apparatus 1 will be sent to the manufacturer soon and the flash memory 6 will be replaced or a new composite It is possible to take measures to purchase a new type recording / reproducing device. Further, the user who has seen the second warning screen B with the message that the life of the flash memory 6 has expired has exceeded the original life of the flash memory 6 built in the composite recording / reproducing apparatus 1 owned by the user. In this state, since it is not known when the operation of the composite recording / reproducing apparatus 1 becomes abnormal, the composite recording / reproducing apparatus 1 is immediately sent to the manufacturer to have the flash memory 6 replaced. In other words, they will know that they must take measures to quickly buy a new composite recording / reproducing apparatus. Therefore, the user can cope with it according to his / her convenience, and can prevent a trouble that data cannot be saved suddenly and recording or reproduction cannot be performed.

  In the above embodiment, the flash memory 6 is taken as an example of the nonvolatile memory. However, the first warning screen A and the second warning screen B related to the life are similarly displayed on the monitor device 13 for the EEPROM. Can be displayed on the display device 131. Moreover, in the said embodiment, although the 1st warning screen A and the 2nd warning screen B were displayed on the display apparatus 131, the message of the 1st warning screen A and the 2nd warning screen B is not restricted to this. May be displayed on the display panel of the main body operation unit (not shown). In the above embodiment, the first warning screen A and the second warning screen B related to the lifetime of the flash memory 6 provided in the composite recording / reproducing apparatus 1 have been described. However, any electrical device provided with the flash memory may be used. Similarly, the first warning screen A and the second warning screen B regarding the lifetime of the flash memory can be displayed.

  INDUSTRIAL APPLICABILITY The present invention can be used for an electric device having a built-in nonvolatile memory such as a hard disk device, an optical disk device, a personal computer, a copying machine, or a printer. The warning is made on the warning screen and the second warning screen.

It is a block diagram which shows the structure of the composite type | mold recording / reproducing apparatus as an electric equipment which concerns on one Embodiment of this invention. It is a figure for demonstrating the content of the 1st warning screen displayed on a display apparatus in the said embodiment. It is a figure for demonstrating the content of the 2nd warning screen displayed on a display apparatus in the said embodiment. 6 is a flowchart for explaining a warning screen display process regarding the lifetime of the flash memory in the composite recording / reproducing apparatus of the embodiment.

Explanation of symbols

A 1st warning screen B 2nd warning screen 1 Composite type recording / reproducing apparatus (electric equipment)
6 Flash memory (nonvolatile memory)
16 CPU (Central Processing Unit)

Claims (3)

In an electrical device comprising a central processing unit that controls the entire device, and a rewritable nonvolatile memory that stores data necessary for data processing and control performed by the central processing unit,
Rewrite count counting means for adding 1 to the number of rewrites and counting the number of rewrites of data to the non-volatile memory when data rewrite to the nonvolatile memory is completed,
Rewrite count storage processing means for storing the rewrite count in the nonvolatile memory;
First rewrite count determination means for determining whether or not the rewrite count is equal to or less than a predetermined upper limit and exceeds a predetermined percentage of the upper limit;
When it is determined that the number of times of rewriting is less than or equal to a predetermined upper limit value and exceeds a predetermined percentage of the upper limit value, a first warning screen of a message that the life of the nonvolatile memory is approaching is displayed on the display unit First warning screen display processing means to be displayed;
Second rewrite count determination means for determining whether or not the rewrite count exceeds a predetermined upper limit;
When it is determined that the number of times of rewriting exceeds a predetermined upper limit, a second warning screen for displaying a second warning screen message indicating that the lifetime of the nonvolatile memory has expired is displayed on the display means. An electric apparatus comprising: a screen display processing unit provided in the central processing unit. In an electrical device comprising a central processing unit that controls the entire device, and a rewritable nonvolatile memory that stores data necessary for data processing and control performed by the central processing unit,
The central processing unit constantly monitors and counts the number of rewrites in which data in the nonvolatile memory is rewritten, and when the counted number of rewrites approaches the upper limit number of rewrites in the nonvolatile memory, the nonvolatile memory A first warning screen with a message saying that the life of the non-volatile memory is approaching, and when the counted number of rewrites exceeds the upper limit number of rewrites of the non-volatile memory, An electric device characterized by causing the display means to display a second warning screen of a message that the life has expired.   The central processing unit includes a rewrite count counter that adds 1 to the number of rewrites and counts the number of rewrites of data to the nonvolatile memory when data rewrite to the nonvolatile memory is completed. A rewrite count storage processing means for storing the rewrite count in the non-volatile memory, and a first rewrite count for determining whether the rewrite count is equal to or less than a predetermined upper limit value and exceeding a predetermined percentage of the upper limit value. A first warning screen of a message saying that the life of the non-volatile memory is approaching when it is determined that the number of rewrites is not more than a predetermined upper limit value and exceeds a predetermined percentage of the upper limit value First warning screen display processing means for displaying on the display means, and determining whether or not the number of rewrites exceeds a predetermined upper limit value And a second warning screen with a message that the non-volatile memory has expired when it is determined that the number of times of rewriting exceeds a predetermined upper limit value. The electrical apparatus according to claim 2, further comprising second warning screen display processing means to be displayed on the display means.

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