JPH0124658Y2 - - Google Patents

Description

[Detailed explanation of the idea]

TECHNICAL FIELD OF THE INVENTION The present invention relates to data storage devices such as memo calculators and data bank calculators. [Prior art and its problems] There are personal computers and the like that store data in tabular form. In this case, the display section is configured for one screen such as a CRT, so the entire table can be displayed. However, hand-held electronic devices, such as memo calculators and data bank calculators, usually have a display section for only one line, so they cannot display the entire table at once. Therefore, it is conceivable to display the data one by one, but this results in the inconvenience that the record name and item name of the data cannot be known at all. [Purpose of the invention] The present invention has been made in view of the above points, and is a data storage device that sequentially reads tabular data stored in a memory and displays it on a display unit. It is an object of the present invention to provide a data storage device whose name can be easily confirmed. [Summary of the invention] The present invention is a data storage device that reads and displays data stored in a memory in record order or item order according to key operations, and allows the record name or item name of the data being displayed to be read by a specific key operation. It is designed to be displayed. [Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a key input section, in addition to data input keys such as a numeric keypad and alphanumeric keys, for example, a FILE key 2a, an EXE key 2b,
It is provided with an IT△ key 2c, an RE key 2d, and four types of pointer movement keys 3a to 3d. the above
The FILE key 2a is a key for writing or reading file names of table data stored in a data memory, which will be described later.The EXE key 2b is a key for separating data (during input) and reading record names.
Also, IT△ key 2c is a key to read the item name,
The RE key 2d is a key for reading record names. The pointer movement key 3a is a key for reading data in item order as shown in FIG. 2A, the pointer movement key 3b is a key for reading data in record order as shown in FIG. 2B, and pointer movement key 3c. is a key for reading data in the reverse order of pointer movement key 3a, and pointer movement key 3d is a key for reading data in the reverse order of pointer movement key 3b. Thus, data input from the key input section 1 is sent to the CPU 4. this
A memory management section 5, a data memory 6, a comparison/judgment section 7, and a delimiter code generation section 8 are connected to the CPU 4. The memory management unit 5 manages the data memory 6 according to instructions from the CPU 4, and includes an address register MPA in addition to pointers CP and MP. The pointer CP is used to indicate the structure of the table data, and consists of _CPR , where the number of records of data stored in the data memory 6 is set, and _CPI , where the number of items is set. The pointer MP is used to indicate where the currently specified address is in the table stored in the data memory 6, and points to the MP _R where the number of records is set and the MP R where the number of items is set. It begins with _I. Then, the address indicated by the pointer MP is set in the address register MPA, and the data memory 6 is addressed based on this content. The contents of each pointer CP and MP in the memory management section 5 are as follows:
Sent to CPU4. This CPU 4 receives record pointers sent from the memory management section 5.
It is provided with a register HP _R that temporarily stores the contents of MP _R and a register HP _I that temporarily stores the contents of the item pointer MP _I. In addition, the memory management section 5
The contents of each pointer CP and MP are sent to the comparison/judgment section 7. This comparison/judgment section 7 is a CPU
4 and data from the memory management section 5, and outputs the comparison/judgment result to the CPU 4. On the other hand, the delimiter code generating section 8 generates an item delimiter code indicating the end of an item and a record delimiter code indicating the end of a record under the control of the CPU 4 and outputs them to the CPU 4. Also,
The data read from the data memory 6 is
The delimiter code is sent to the display unit 9 and also sent to the delimiter code detector 1.
Sent to 0. This delimiter code detection section 10 detects the two types of delimiter codes, item and record, from the data output from the data memory 6, and outputs each detection signal to the memory management section 5. Next, the operation of the above embodiment will be explained. For example, let us assume that the results table shown in Table 1 below is stored in the data memory 6.

[Effect of idea]

As described above, according to the present invention, record names and item names can be checked immediately, and there is no inconvenience even when data is displayed one by one on the display section.
It can have extremely great practical effects.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a block diagram showing the circuit configuration, FIGS. 2A and B are diagrams showing the order of reading data for the pointer movement keys, and FIG. A flowchart showing the operation when operating a key to specify a record name. Figure 4 is a diagram showing an example of key operations when reading data, and changes in the pointer, register contents, and display contents in response to the key operations. be. 1...Key input unit, 3a to 3d...Pointer movement keys, 4...CPU, 5...Memory management unit, 6
...Data memory, 7...Comparison/judgment section, 8...
. . . Delimiter code generation section, 9 . . . Display section, 10 . . . Delimiter code detection section.

Claims (1)

[Scope of utility model registration request] In a data storage device that reads tabular data having a predetermined number of records and items stored in a memory in response to a key operation and displays it on a display section, record names or items for display data displayed on the display section are used. A specific key that instructs the display of the name, and when this specific key is operated,
means for storing address data of the display data for the memory in a data saving register; and means for reading a record name or item name for the display data from the memory and displaying it on the display section in response to the operation of the specific key. and means for restoring the contents of the data saving register as address data of the memory after the operation of the means is completed.