SU382087A1 - DEVICE FOR DISPLAYING INFORMATION - Google Patents

Description

one

A device for displaying information relates to the field of automation and computer technology, in particular, to information display devices using a fluorescent screen.

Devices for displaying information are known, comprising a luminescent screen, a keypad, a control device, a memory device associated with a status register in which characters are recorded in the order of their arrival without marking the place where the next character is recorded.

The proposed device is characterized in that it additionally includes single-pulse generators, an OR circuit, a reversible counter, a descrambler, and a high-frequency voltage generating unit. One of the generators of single pulses through the OR circuit, and the others are directly connected to the keys of the panel, to which the high-frequency voltage generation unit is also connected. The outputs of the single pulse generators and the control unit are connected via a decoder to the state register, the memory unit and the high-frequency voltage generation unit, the output of which is connected to a fluorescent screen.

This allows you to edit the message to highlight the required pieces of information for input into the computer.

The drawing shows a block diagram of a device for displaying information.

The device consists of the scheme "OR 1", designed to connect the keyboard

naneli; a generator of single pulses 2, designed to generate a single pulse when you press one of the keys: the alphabet, "space. Or" step forward; a generator of single pulses 3, designed to generate a single imiuls when pressing the line-down key; a single pulse generator 4, designed to generate a single pulse when you press the new line up key; a single pulse generator 5, designed to produce a single e. pulse when you press the key "step back; reversible counter 6 for counting the number of characters and lines dialed per

keypad or coming from a computer; a decoder 7 intended for generating control potentials for triggering a high-frequency voltage generating unit for writing characters in memory B depending on the contents of the reversible counter; a high-frequency voltage generating unit 8 for generating a high-frequency voltage that emits glow markers indicating the place where the characters are written on the fluorescent screen. In addition, the device contains a keypad, a nel 9, a control unit 10, a memory block //, a luminescent screen 12, and a status register 13.

The information display device operates as follows.

At the input to any input of the “OR / differential voltage: Yen” circuit, at the output of the single impulse generator 2 a single impulse has a single impulse (the operation of the single impulse generators is similar to 3-5). Since the output of the generator of single pulses 2 is connected to the input of the addition of the number of symbols of the reversible counter 6, when the single pulses are received through this connection, the contents of the reversible counter increase by one. The output of the generator of single pulses 3 is connected to the input of the addition of the number of rows of the reversible counter 6, therefore, when a single pulse is received through this channel, the contents of the reversible counter are increased by the number of characters of the string. From the output of the single pulse generator 4. The pulses arrive at the input of the subtraction of the rows of the reversible counter 6, so that the content of the latter is reduced by the number of characters per line, i.e. it decreases by one line. The pulses from the output of the generator of single pulses 5 are fed to the input of the subtraction of the characters of the reversible counter 6, and thus, each incoming pulse to this input will reduce the contents of the reversing counter 6 by one. The contents of the reversible counter decode the decoder 7 and issue control potential at one of its outputs.

The control potential from the output of the decoder 7 is used to enable the symbol to be written to a specific location of the memory unit P and to start the corresponding blocking generators of the high-frequency voltage generating unit 8. The outputs of the high-frequency voltage generating unit are connected to the marker points on the fluorescent screen 12, glow which occurs under the influence of high-frequency voltage. Run the blocking generators from the decoder

7 is possible only when a potential potential is applied to the input of the high-frequency voltage generation unit 8, which is usually activated by means of the on key of the luminescent screen 12, or automatically from any control circuits. Thus, it is possible to turn on the luminescent screen 12 and the high-frequency voltage generating unit 8 only at the right moments, which prolongs the service life of these devices. Thanks to the marker point on the fluorescent screen / 2, you can always see where the next character is recorded. Using the control keys: “step forward,” step back and line feed up and down, the operator has the ability to specify any place to write or correct a character, i.e., to edit messages character by character. When information is input-output to a display device on a computer, the counting of the entered or output characters is carried out according to the number of impulses coming from the control unit 10, respectively, at the addition or subtraction inputs of the number of characters of the reversible counter 6.

Subject invention

A device for displaying information

containing a luminescent screen, a keypad, a control unit and a memory unit connected to a register, characterized in that, in order to extend the functionality, it is additionally introduced

single pulse generators, OR circuit, reversible counter, decoder and high-frequency national generation unit, one of the single pulse generators through the OR circuit, and the rest

directly connected to a keypad, which is connected to a high-frequency voltage generating unit; the outputs of the single-pulse generators and the control unit are connected via a decoder to the register, the memory unit and the high-frequency voltage generation unit, the output of which is connected to the luminous screen.