CN2219508Y - Calculator with display function in operation - Google Patents

Abstract

The utility model relates to a calculator with display function in operation, which comprises a microprocessor, an input/on-off setting circuit, a display, and a power supply, wherein, the microprocessor comprises a central processing unit, an input circuit, a sequence signal generator used for providing sequence signals to the central processing unit, a read only memory body, a stochastic memory body, and a display control unit. The memory bodies carry out a plurality of groups of data memory under the control of the central processing unit. The display control unit has at least two visual windows, so after the central processing unit receives the arithmetic operation of the input circuit, the arithmetic result and the memory data are separately displayed on the two visual windows.

Description

The counter that in computing, has Presentation Function

The utility model is relevant for a kind of counter; Particularly a kind of counter that in computing, has Presentation Function, it can do the multi-group data storage, and when showing the state of data memory in regular turn, it still can keep computing and demonstration, and the calculation data can not be eliminated.

Aspect general computing, counter is an instrument easily; Therefore, be widely used in the daily life.Usually, counter all has data accumulating and calculation function, in the process of auxiliary calculation, part compute data or numerical value is carried out data accumulating; Then,, it is stored in random access memory (RAM) inside, with in the arithmetic expression of substitution back or cooperate another computational data partly through user's button operation.Certainly, for the handled easily person inquires about memory numerical value, counter provides one and reads key (MRKEY); But, just as those have the knack of this technology the people knew, general counter all only provides one group of memory space, and after operating this memory and reading key, promptly destroy simultaneously or eliminated ongoing calculation data and demonstration thereof, and the difficulty that this situation all causes the user to use for a long time.

Fundamental purpose of the present utility model is to provide a kind of counter easy to use, and it has many group memory functions.

Another purpose of the present utility model is to provide a kind of counter, makes the operator when inquiry memory numerical value, still can finish ongoing computing simultaneously, and can not destroy these calculation data.

Another purpose of the present utility model is that the indicative control unit of this counter has first form and second form at least, make CPU (central processing unit) after receiving the arithmetic operation of input circuit, the process and the result of arithmetic expression shown at second form through indicative control unit.Particularly, in above-mentioned calculation, during as if this memory function of use, CPU (central processing unit) is represented data memory in regular turn via indicative control unit simultaneously, but can not be destroyed or eliminate ongoing calculation data in first form.

The utlity model has the counter of Presentation Function, comprise that microprocessor connects input/switch initialization circuit, display and power circuit respectively; It is characterized in that microprocessor comprises:

One CPU (central processing unit); Connect:

One will be transferred to the input circuit of CPU (central processing unit) by the operation signal of input/switch initialization circuit input;

One clock signal generator, in order to supply with the CPU (central processing unit) clock signal:

One store to carry out the read-only memory of running instruction and in order to a random access memory of numerical value storage, operational data, is connected with CPU (central processing unit) through internal bus; And

One indicative control unit that is connected with internal bus;

Display has two viewing areas at least, by the data memory and the ongoing operational data of microprocessor output, can be shown in the different viewing areas of display simultaneously;

The viewing area is connected with described input/switch initialization circuit, via the function key operation of input/on-off circuit;

CPU (central processing unit) is under the control of input/switch initialization circuit, and random access memory produces many group data memories, and the data in the computing are shown on the described display simultaneously by indicative control unit.

Described read-only memory has program read-only memory and font read-only memory two parts.

Described indicative control unit includes one in order to the display access memory body of depositing the calculation data and display driver circuit and the controlling output circuit that described data is sent to display.

Characteristics of the present utility model and purpose will be in hereinafter conjunction with figs. and embodiment illustrate in detail;

Description of drawings:

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 structure block diagram of the present utility model.

Fig. 3 is an executive routine process flow diagram of the present utility model.

Fig. 4 is a microprocessor circuit diagram partly shown in Figure 1.

Fig. 5 is input/switch initialization circuit figure shown in Figure 1.

Fig. 6 is a display circuit shown in Figure 1.

Fig. 7 is power circuit and pronunciation circuit figure shown in Figure 1.

As Fig. 1, shown in 2, counter of the present utility model comprises microprocessor 10, connect input/switch initialization circuit 20 respectively, display 30 and power circuit 40 etc. are partly, wherein microprocessor 10 has a CPU (central processing unit) 101, connect one and will operate the input circuit 102 that signal transfers to CPU (central processing unit) 101, an and timing signal generator 103 that is used to supply with CPU (central processing unit) 101 clock signals, and the read-only memory 104 of a storage execution running instruction, an and numerical value storage, the random access memory 105 of operational data, and one institute such as indicative control unit 106 constitute.Feasible embodiment is that this read-only memory 104 has program read-only memory 107 and font read-only memory 108 2 parts; Then, be connected CPU (central processing unit) 101 with this random access memory 105 through bus 109.In addition, input circuit 102 is connected between an outside input/switch initialization circuit 20 and the CPU (central processing unit) 101, input circuit 102 is operated the signal that input/switch initialization circuit 20 is imported in order to scan the outside, and after decoding, transfers to CPU (central processing unit) 101.Concrete wiring diagram as shown in Figure 4.

At (shown in each figure) in the preferred embodiment, indicative control unit 106 has display access memory body 110, display driver circuit 111, controlling output circuit 112 and forms; Indicative control unit 106 will content displayed or the calculation deposit data at display access memory body 110, via driving circuit 111 and controlling output circuit 112 foregoing or data are sent to display 30 then.Therefore, the operation signal of operator on the outside input/switch initialization circuit 20 of counter can be cooperated with read-only memory 104, random access memory 105 by CPU (central processing unit) 101 to perform calculations then by scanning, the decoding of input circuit 102; Simultaneously, indicative control unit 106 will calculate process and the result shows at display 30.In above-mentioned calculation process, as shown in Figure 3, the operator is if use when remembering step display 50, CPU (central processing unit) 101 will be carried out a subroutine, with data to be remembered, leave random access memory 105 inside in, and can make many group memory input steps 51 and mat indicative control unit 106 demonstrate this memvar (this memvar has at least more than one, and it is corresponding to number of keys) at display 30 data in regular turn.And make the operator in the calculation operation process, also can know above-mentioned memvar, and can not make ongoing calculation data be eliminated or destroy, so display 30 of the present utility model can be set as and have two viewing areas at least, can when remembering access, the while of the arithmetic expression in data memory and computing subregion be shown on the display 30; Further, can import via the outside/operation of function key on the switch initialization circuit 20, inquire about, show each memvar data in regular turn.

Shown in Fig. 4,5, the input among Fig. 5/switch initialization circuit is corresponding to button part of the present utility model, and the pin KI1-KI7 on the integrated circuit of microprocessor 10 is connected to the respective keys among Fig. 5.

Shown in Fig. 4,6, Fig. 6 is the circuit diagram of display 30 of the present utility model, and pin SCI-603 wherein and HCI-83 are connected respectively to the pin S44-S60 and the H1-H8 of microprocessor 10 integrated circuit.

Shown in Fig. 4,7, Fig. 7 is power circuit of the present utility model and pronunciation circuit figure, and wherein pronunciation circuit comprises triode 71 and hummer 72; The base terminal of triode 71 is connected to the BZ end of microprocessor 10 through a resistance; The end RESET that resets connects the RESET end of master microprocessor 10.

Effect of the present utility model: in sum, the utility model provides One result of use is calculator preferably, and this device can make the operator make many group notes The access computing of recalling, and under the effect that can inquire about memory numerical value, simultaneously complete Become ongoing calculation, and can not destroy these calculation data, it can solve biography The shortcoming of system computer has preferably practicality.

Claims (3)

1, a kind of counter that has Presentation Function in computing comprises that microprocessor connects input/switch initialization circuit, display and power circuit respectively; It is characterized in that microprocessor comprises:

One CPU (central processing unit); Connect:

One will be transferred to the input circuit of CPU (central processing unit) by the operation signal of input/switch initialization circuit input;

One clock signal generator, in order to supply with the CPU (central processing unit) clock signal:

One store to carry out the read-only memory of running instruction and in order to a random access memory of numerical value storage, operational data, is connected with CPU (central processing unit) through internal bus; And

One indicative control unit that is connected with internal bus;

Display has two viewing areas at least, by the data memory and the ongoing operational data of microprocessor output, can be shown in the different viewing areas of display simultaneously;

The viewing area is connected with described input/switch initialization circuit, via the function key operation of input/on-off circuit;

CPU (central processing unit) is under the control of input/switch initialization circuit, and random access memory produces many group data memories, and the data in the computing are shown on the described display simultaneously by indicative control unit.

2, the counter that in computing, has Presentation Function according to claim 1; It is characterized in that described read-only memory has program read-only memory and font read-only memory two parts.

3, the counter that in computing, has Presentation Function according to claim 1; It is characterized in that,

Described indicative control unit includes one in order to the display access memory body of depositing the calculation data and display driver circuit and the controlling output circuit that described data is sent to display.

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