JPS59140573A - Key inputting system - Google Patents

Abstract

PURPOSE:To make a structure small in size and cheap in an electronic apparatus provided with alphabetical character keys by outputting plural character patterns by depressing a special key similarly with the case when plural character keys are depressed. CONSTITUTION:At least one special key (for instance SIN key) is provided in a character generator. Same display or print pattern is obtained when the special key is depressed or similar plural character keys (for instance, S, I, N, keys) are depressed in this order.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field) The present invention relates to an input method for electronic devices such as scientific calculators, and more particularly to a manual key input method for electronic devices equipped with alphabetic character keys and special keys.

(Conventional) In a scientific calculator equipped with conventional alphabetic character keys and special keys such as trigonometric function keys, the display or print pattern differs when the trigonometric function key such as d is pressed and when the Arsua key (8) mN is pressed. They had different opinions. Therefore, the character generator had to be large.

(the purpose) The present invention aims to solve the above-mentioned drawbacks.

(Configuration) In order to achieve the above object, the present invention is equipped with a small character generator, and the display or print pattern is the same even when a special key such as the [n key is pressed or the osoo key is pressed in this order. It was configured as follows.

(Example) Fig. 1 is a block diagram of an example of the present invention, and shows a trigonometric function key! , alpha keys (8), (1), date keys, numerical keys n to l, and others.

The CPU is an arithmetic control unit that includes an arithmetic unit, a temporary storage unit, a character comparison unit, and others. RAM is a random access memory that sequentially stores input key information, ROM is a only memory that stores a specific alphabet character group, and ACI
, AC2 are respective address circuits, and DIS is a dot pattern display or printer.

Now, let us assume that '5IN30-' is entered manually using two methods: 1 day (8), rn, o (6) 2 days.

■ is an example of input using the function key I, which is one of the special keys, and ■ is a general alpha key (3) l [1, [E
This is an example of inputting more than n. Both '5IN30-
” The same pattern is displayed, but in ■, 5IN3 is displayed.
Performs the operation of 0 and also displays the result. More specifically, when a key is pressed, a corresponding processing code is generated, sequentially stored in the storage device RAM, and displayed on the display device DIS by the character generator CG. The RAM is S, 1. N, 3.0. It consists of a six-character code part and a flag part that identifies whether or not to perform further calculations.

FIGS. 2 and 3 show the storage state of the storage device RAM when the above-mentioned keys ① and ③ are manually operated.

As shown in the figure, the address section RAMA and the operation execution flag section R
It consists of AMB and character code section RAMC.

FIG. 4 is a diagram showing the internal state of the fixed storage device ROM. ROMA is an address section, ROMB is a first character identification flag section, and ROM and C are character code sections.

Now, when the [E] key is pressed at Noshi 0, S, 1. Each code of N is sequentially written to RAMC, and the output of this RAMC is set to 0.
The signals are applied to the CG in order from address 00, and rsINJ is displayed on the display device DIS, for example.

Similarly, the example (2) is written in the RAMC in the order of key operations as shown in FIG. 3, and the CG is driven for each key operation to display the same pattern rsINJ as above on the DIS.

This #) One small character generator CG
The (8) (\1N) key and the (8) (\1N) key can be displayed in the same pattern.

The following numbers (3)l [1! For [=], the same pattern display is performed by the same operation as described above in both examples ① and ②.

By the way, when the date key is pressed, it is necessary to judge whether the information input so far is due to a special function key and should be executed, or whether it is due to the alpha key and should only be displayed, as shown in Figure 5A. Then, the operation execution flag RAMB is checked from the beginning of the RAM. When this flag is 1', the process goes to an identification routine to identify what kind of arithmetic function it is. When this flag is O', the process is terminated without performing any calculation.

Next, an identification routine for identifying the function from the character code section of RAMC when the calculation execution flag RAMB=1 will be explained with reference to the flowchart of FIG. 5B.

FIG. 5 is a flowchart for explaining the operation. First, the address counters ACI and AC2 are cleared (■) and the contents of the ROMC stored at the address indicated by ACI at that time and the RAMC stored at the address indicated by AC2 are cleared. Compare whether the contents of are equal (■).

If they are equal, both ACI and AC2 are increased by +1 ■) If 11' is in the 7-lag ROMB that identifies the first character of the ROM stored at the address of ACI at that time (■), this extends to the beginning of the next function symbol. Therefore, the input function is identified and the process moves to the calculation execution routine. (■)
If ROMB=0', return to (2) again and repeat the same process.

Also, when it is ROMC to RAMC in ■, if the stored information in ROM is still continuing, clear AC2 and set ACI to +.
Increase by 1. (■, ■) If the ROM head identification flag ROMB (ACI) at that time is 11', return to ■,
When the value is 10', the ACI is increased by +1 until it becomes 11'. (■) (Effect) The present invention is preferable because it can avoid increasing the size of the character generator as described above.

Furthermore, according to this embodiment, by selecting the key manual method, it is possible to choose whether to also display the calculation execution results such as the answer to the mathematical formula, or to simply display the mathematical formula without executing the calculation. It is also possible to have the learner calculate the answer by only displaying the following, and it is very convenient because it is small and inexpensive, and the usability is greatly improved.

[Brief explanation of the drawing]

Figure 1 is a block diagram of an example of the present invention, Figures 2 and 3 are RA
FIG. 4 is a diagram showing an example of storing the contents of the ROM manually, and FIGS. 5A and 5B are flowcharts for explaining the operation. Mouth x...Special key RAM, ROM・
...Memory (3), [111W ... Alphabet character key DIS ... Output device agent Gi Marushima @,", (,:',',:
' + ko゛(.J:'+, I"・da

Claims (1)

[Claims] An electronic device equipped with a group of alphabetic character keys and a character output device, which includes at least one special key, and when the special key is pressed, a plurality of character patterns similar to those when the plurality of alphabetic character keys are pressed are outputted. This is a key manual method that is characterized by outputting to a device.