JPS63268024A - Electronic computer - Google Patents

Abstract

PURPOSE:To prevent the input to a central arithmetic circuit even in case the mistouches of keys occur by adding a switch to a keyboard to interrupt temporarily the input operation carried out via the keyboard. CONSTITUTION:The information is delivered to a logic circuit 5 from a keyboard 1 via an information line 2 and usually sent as it is to a central arithmetic circuit 6. When an interruption is desired for input of information given from the keyboard 1, a switch 7 of a switching part 3 is changed over and a control signal is sent to the circuit 5 via a control signal line 4. Then a logical arithmetic operation is carried out between two signals so that no information is sent to the circuit 6 any more. When the second input of information is desired, the switch 7 is reset to its original state.

Description

[Detailed Description of the Invention] [*Field of Industrial Application] The present invention prevents the user from accidentally pressing a key switch by switching the switch when inputting information from the keyboard, which is an information input means, is not required. Concerning electronic computers that do not allow incorrect information to be entered.

[Conventional technology]

In conventional electronic computers, the keyboard, which is the means of inputting information, is always available for inputting information.

[Problem that the invention seeks to solve]

However, in the conventional technology, even when you want to temporarily suspend inputting information, the keyboard remains ready for input, so it is possible to accidentally touch a key switch while inputting is temporarily suspended, or the key switch may not be pressed properly. There were cases where something fell on top of the system, resulting in information being entered that was contrary to the input worker's intention.

The present invention has been developed to solve these problems.The purpose of the present invention is that when you want to temporarily interrupt input work from the keyboard, by switching the switch, you can avoid pressing the key switch by mistake. To provide an electronic computer in which information signals from a keyboard are not input to a central processing circuit.

[Means for solving problems]

As shown in the block diagram of FIG. 1, the electronic computer of the present invention includes a keyboard 1 for inputting information, and switches between permission and disapproval of inputting information signals from the keyboard to a central processing circuit. a switching unit 3 that outputs a control signal; and a logic circuit 5 that performs a logical operation based on the information signal from the keyboard and the control signal from the switching unit.
and a central processing circuit 6 that performs calculations when information signals are input.

[Effect]

To explain the operation of the computer according to the present invention, the control signal from the switching section 3 executes control such that the information signal from the keyboard 1 is not sent to the central processing circuit 6.

〔Example〕

The present invention will be explained in detail below based on the drawings.

FIG. 2 shows an embodiment of the electronic computer of the present invention, in which 1 is a keyboard for inputting information, and information is output to a logic circuit 5 via an information signal line 2. , the information is normally sent as is to the central processing circuit as shown in the cld section (Fig. 3). If you want to cut off the information signal input from the keyboard for an hour, switch the switch 7 of the switching unit 3 and send the control signal to the control signal line 4.
By performing a logical operation between the two signals, the information signal is no longer sent to the central processing circuit 6 as in section d (FIG. 3). If you want to perform manual information work again, you can simply return the switch to its original state.

〔Effect of the invention〕

As explained above, according to the present invention, by switching the switch 7, the input of information signals from the keyboard 1 can be temporarily interrupted. It is possible to prevent information from being inputted against the intention of the information input worker due to an object falling onto the key switch. With the spread of electronic computers that are smaller and easier to carry, users can simply flip a switch to input information from a limited area such as in a car or on an airplane seat. It has the advantage of being able to store materials, etc. Furthermore, it is possible to prevent someone else from inputting information incorrectly, such as when the user has to quit midway through the information input process.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an electronic computer according to the present invention. FIG. 2 is a diagram showing an embodiment of the electronic computer of the present invention. FIG. 3 is a timing chart showing the relationship between information signals, control signals, and signals sent to the central processing circuit in the electronic computer of the present invention. 1...Keyboard 2...Information signal line 3...Switching section 4...Control signal line 5...Logic circuit 6...Central processing circuit 7...Switch 8...Resistor a...Signal line or above Applicant: Seiko Epson Co., Ltd.

Claims (1)

[Scope of Claims] (a) A keyboard in which a large number of key switches are arranged on a plane as information input means for inputting information into a computer; (b) Central processing of information signals output from the keyboard; (c) a logic circuit that performs a logical operation based on the information signal from the keyboard and the control signal from the switching unit; (d) An electronic computer comprising: a central processing circuit that performs calculations when an information signal is input.