SU386415A1 - DEVICE FOR READING INFORMATION - Google Patents

Description

one

The invention relates to the field of aeTOMatH K and computer technology,

Known devices for reading information on the author. St. No. 326606.

However, the known devices have low speed.

In order to eliminate this drawback, an additional decoder and mode register are entered into the proposed device, the inputs of which are connected respectively to the coordinate register, the counter, the distributor, and the additional decoder is connected to the coordinate register and the mode register.

The drawing shows the block diagram of the device.

The structure of the proposed device includes: a tablet, /, current switches 2, sensor 3, signal distributor 4, 1 output coordinate register 5, counter 6 pulses of sensors, coincidence circuit 7, decoding code of the pulse counter of sensors, additional decoder S and mode register 9 .

The tablet / contains encoding windings. Information input management is carried out using a stencil superimposed on the coordinate plate of the sheet. On the stencil there is a coordinate grid, divided into zones of addresses of the memory cells (memories), symbols and zones for setting the modes of operation of the device.

The modes of operation are: input of the initial address into the memory address counter, sequential input of bytes, input of characters into selected memory cells, reading the contents of memory cells for visual control, etc. In the area of characters, symbols and symbols are shown, the code of which can be entered into memory cells. The symbols include letters of the Latin and Russian alphabet, numbers, separators, the code of which is defined by the state standard.

The address area of the grid is divided into squares. Each square corresponds to the address code of the memory cell.

The current switches 2 are designed to generate pulsed currents in the coding windings of the U tablet. The current keys control signals from the signal distributor 4 and the coordinate register 5.

Sensor 3 senses and amplifies signals from coding windings. The signal distributor 4 is designed to generate a sequence of pulse signals arranged in time. The signal distributor contains a pulse generator and a counter with two decoders.

The signal distributor starts from the button, and in some modes automatically.

The coordinate register 5 is designed to convert the combined code from sensor 3 to a parallel binary coordinate code. In the lower bits of the coordinate register 5, a one-variable 2 - digit code is transformed. This code is characterized by the same period of change of code values in all bits. In addition, the code of the first digit of the specified 2-digit code corresponds to the inverse code fe-ro bit of the binary number system, where 1. In the higher bits of the coordinate register, the unitary code represented by the unit in only one bit is transformed. To convert the unitary code, the coordinate register receives a parallel binary code from the signal distributor 4. Counter 6 pulses of the sensor with a coincidence circuit 7 is designed to generate a reliable signal for tracking the coordinate code. In case of an incorrect number of pulses of the unitary code, the coincidence circuit does not produce a signal. An additional decoder 8 is intended to form features of the zones of the tablet coordinate field. The mode register 9 is designed to generate I / O signals that control the operation of an I / O device when entering character information. At the output of the mode register, the code is represented by a unit in only one bit. The code of the higher bits of the X coordinate is recorded in the mode register only if there is an indication of the mode area and the correct code combination from the sensor pulse counter. The code is written to the mode register under the influence of a distribution signal. Before writing the code, the signal distributor 4 resets the mode register 9 (if there is an indication of the mode zones). The operation of the device occurs at the start of the signal distributor 4 and consists in the sequential interrogation of the coding windings of the plate / and the conversion of the combined sensor code into a parallel binary coordinate code. After forming the coordinate code, the coincidence circuit 7, deciphering the counter code of the sensor pulses 6, under the influence of the distribution signal, generates a trigger pulse for the control circuit of the associated information input / output device. The coordinate code is sent to the information or address part of the memory, depending on the set operating mode. When setting the operating modes, the start-up pulse does not cause the start-up of the control circuit of the I / O device, since at this time the required control signals are missing at the outputs of the additional decoder. The subject of the invention A device for reading information on the author. St. No. 326606, characterized in that, in order to improve the speed of the device, it contains an additional decoder and mode register, the inputs of which are connected respectively to the coordinate register, counter, distributor, and the additional decoder is connected to the coordinate register and the mode register.