Electronic calculating apparatus
First Claim
1. An electronic calculating apparatus comprising:
- an electronic calculator; and
a display device,wherein;
said electronic calculator comprises;
input means for inputting data;
sending means for sending data inputted by said input means using a radio frequency wave;
first processing means for performing an operation based on the data inputted by said input means; and
first display means for displaying a result of the operation performed by said first processing means, and wherein;
said display device comprises;
receiving means for receiving data sent from said sending means of the electronic calculator;
second processing means for performing an operation which is substantially the same as the operation performed by said first processing means of the electronic calculator; and
second display means having a liquid crystal display unit of a transparent type, for displaying on the liquid crystal display unit of a transparent type a result of the operation performed by said second processing means.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic calculating apparatus for use with an overhead projector and a projection screen includes an electronic calculator and a display device. The electronic calculator comprises a data input unit and a data sending unit. The electronic calculator performs an operation corresponding to data inputted from the data input unit, and displays a result of the performed operation. The display device comprises a liquid crystal display unit of a transparent type and a data receiving unit for receiving data sent from the sending unit of the electronic calculator. The display device is placed on the top of the overhead projector, and, upon receipt of the data sent from the data sending unit of the electronic calculator, the display device performs an operation that is substantially the same as the operation performed by the electronic calculator, and displays the result of the performed operation on the liquid crystal display unit of a transparent type. The result of the operation displayed on the liquid crystal display unit of a transparent type is enlarged and projected through the overhead projector onto the projection screen.
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Citations
16 Claims
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1. An electronic calculating apparatus comprising:
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an electronic calculator; and a display device, wherein; said electronic calculator comprises; input means for inputting data; sending means for sending data inputted by said input means using a radio frequency wave; first processing means for performing an operation based on the data inputted by said input means; and first display means for displaying a result of the operation performed by said first processing means, and wherein; said display device comprises; receiving means for receiving data sent from said sending means of the electronic calculator; second processing means for performing an operation which is substantially the same as the operation performed by said first processing means of the electronic calculator; and second display means having a liquid crystal display unit of a transparent type, for displaying on the liquid crystal display unit of a transparent type a result of the operation performed by said second processing means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electronic calculating apparatus for use with an overhead projector, comprising:
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an electronic calculator; and a display device to be used with the overhead projector, wherein; said electronic calculator comprises; input means for inputting data; sending means for sending data inputted by said input means using a radio frequency wave; first processing means for performing an operation based on the data inputted by said input means; and first display means for displaying a result of the operation performed by said first processing means, and wherein; said display device comprises; first memory for storing control information;
second memory detachably installed in said display device, for storing control information;receiving means for receiving data sent from said sending means of the electronic calculator; second processing means for performing an operation based on the data received by said receiving means and the control information stored in said first memory means when said second memory is not installed in said display device, and for performing an operation based on the data received by said receiving means and the control information stored in one of said first memory and said second memory; and second display means having a liquid crystal display unit of a transparent type, for displaying on the liquid crystal display unit of a transparent type a result of the operation performed by said second processing means. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification