DE2241915A1 - LEARNING AND PRACTICE MACHINE TO LEARN TO OPERATE KEYBOARDS - Google Patents

Description

Learning and practice machine for learning how to use keyboards.

The present invention relates to a keyboard learning and exercise machine for learning to use keyboards.

The use of devices with keyboards, such as Typewriters, adding machines, typesetting machines, computer terminals, key punch machines and similar types of devices, has been widely used over the past 25 years. To the training needs for the use of such devices To cover, courses are offered by public and private Educational institutions are offered in which conventional class teaching methods can be applied. In recent years it has been recognized that these conventional teaching methods can be achieved through the use of can be replaced or supplemented by special keyboard learning machines. These learning machines enable an individual Teaching the use of keyboards, with the tutorial is adapted to the abilities of the learner. These devices include a keyboard, a keyboard playback device, with the individual keys either as a direct display or as a

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IHSPECTED

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a signal indicator can be lit, and a controlled program device that works with both the keyboard and is connected to the keyboard playback device to provide the learner with practice tasks. Different Basic types of such machines have heretofore been proposed and put into use, but these machines are subject to either with regard to their operational design or with regard to the versatility of the operational possibilities Restrictions.

Accordingly, there is that underlying the present invention Object to provide a new and improved keyboard practice unit of simplified construction and larger in size Versatility. One of the features of the present invention is the use of a digital keyboard and programming unit .

Another feature of the invention is the use of improved and simplified logic circuitry in FIGS Comparator and display circuits.

Another feature of the invention is to provide an error counter which is capable of automatic recording the total number of attacks and errors that the learner took note of the error and an automatic Including writing the bug.

Another feature of the invention is that in the exercise and learning device different teaching modes including a test mode are possible.

Another feature of the invention is the multi-media control that allows the keyboard learning and practice machine either acoustic or optical auxiliary devices operated as additional devices

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used to the program unit of the keyboard learning machine will.

These and other objects and advantages of the invention will become apparent from the following description with reference to the accompanying drawings Drawings and from the claims. In the drawings, in which an embodiment of the invention is illustrated is, are

Figure 1 is a perspective view of the keyboard learning and training unit and an auxiliary unit for pictorial Depiction,

Figure 2 is a circuit block diagram of the circuits of the keyboard exercise and learning machine,

Figure 3 shows the circuitry of the keyboard unit,

FIG. 4 is a block diagram showing the circuits of the multimedia control shows,

FIG. 5 shows the circuits for the control lamps the keyboard display.

As shown in Figure 1, a is given the general reference number Io designated keyboard learning and exercise device together used with a tape reader 12 to instruct a learner in keyboard use. The teaching program is read by the tape reader 12 and transmitted to the keyboard teaching unit Io. With this arrangement, a Audio-video equipment can be used, as indicated by the multi-medium unit 14, to either be a visible one or to enable audible instruction with the arrangement consisting of the keyboard unit and the tape reader.

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22A1915

The keyboard learning and training unit Io has a keyboard 16, which in this case is a typewriter keyboard, and a lamp field 18 that matches the keyboard, whose individual lamps each correspond to a key on the keyboard. The display lamps for a particular key can be used to indicate an actuated key or as a prompt to actuate a key for the student learning to operate the keyboard. the The individual lamps corresponding to the keys to be depressed can be illuminated in time before actuation by the learner in order to show the beginner the positions of the keys on the Keyboard display, or they can be enlightened for an advanced student only if by the student a mistake has been made.

The keyboard learning device zM.t the number of correct depressed keys using the counter 2o and the number of incorrectly depressed keys by the counter 22. An error lamp 24 is lit if the student presses the wrong key. The error is noted and the machine is reset when the error reset button 25 is pressed. A mode switch 26 is located in the upper right corner of the keyboard to allow the student to select the type of instruction on the lamp panel.

The tape reading unit 12 is electrically connected to the keyboard practice unit Io to transmit the electronic signals of the desired program to be used by the student. The tape reader has a standby switch 28 which turns the device on when the student is ready to begin the teaching program. A tape recorder 3o picks up the perforated tape 32 which contains the program for the student. The encrypted tape will

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read from the tape recorder 12, and the keyboard exercise device Io is supplied with an electrical output that has a similar electronic encrypted output is compared, which is produced when the student presses one of the keys on the keyboard.

The multi-medium unit is an auxiliary piece of equipment that it allows the keyboard learning device together with an optical display device 34 and an acoustic Device 36 to use. Corresponding control buttons 38 are provided on the auxiliary device 14,

FIG. 2 shows a block diagram of the circuits of the keyboard unit 16. The keyboard 4o and the tape reader 42 generate encrypted electronic outputs, which from of the unit are compared with one another for equality, and depending on a match, different circuit controls actuated. An electronic digital signal is supplied from tape reader 42 to column registers 44 and 44 sent to the row registers 46. The digital signals are stored in the registers and then subsequently to the Bit gates 48 where they are compared with the digital code output from the keyboard. In the preferred Embodiments of the invention use both the tape reader as well as the keyboard the digital ASCII code. The bit gate 48 and the type gate 50 check a match the signals from the keyboard and the tape reader and generate a corresponding output variable. The reader ready circuit 52 controls the output value from the type gate 5o. If there is a mismatch between the two separate Input signals are present, the comparator circuit generates namely, the bit and type gates a mismatch signal. The signal is passed through the error gate 54 which samples the error or mismatch signal. The error gate includes an AND gate and has an input from both comparator gates 48 and 50 as well

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from the read delay circuit 56. If the match of the signals from the comparator circuit and the read delay circuit a mismatch of input signals from the keyboard and tape reader, a signal is passed through the error gate circuit to the error flip-flop circuit 58 sent.

If the bit and type gates have the same signals from the keyboard and As tape reader circuits are supplied, a pulse indicating the correspondence of the signals is output from the type gate Sent out 5o and the correct gate circuit 60th supplied. In addition to the type gate pulse, there is a pulse from the read delay circuit 56 and a voltage from the error flip-flop circuit 58 is supplied to the gate. These signals are in accordance with the AND function with the output signal links that to the correct flip-flop circuit 62 whose output goes to the correct counter circuit.

In the event of a mistake by the operator, i.e. if there is no correspondence between the signals from the keyboard and of the tape reader is present, the error flip-flop circuit 58 generates output signals that the error lamp 66, the Operate the error counter 7o and the error writing device 72. Writing units for this purpose are commercially available. The stage one switch circuit 76 which controls the main lamp array transistor for the indicator lights is also connected to the flip-flop circuit 58.

The output from the true gate circuit 60 is passed along line 78 to the ballast gate and terminal circuit 80. When the signal is received, the upstream gate 80 sends out an incremental pulse that goes to the AND gate 82 is forwarded. This gate also receives an output pulse from the 80 millisecond lock circuit 84.

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The output of "gate 82" is passed through the 20 millisecond delay circuit 86 sent. The reader standby circuit 52 is also connected to the circuit 86 connected, as well as a tape header circuit 88, the generates the tape hold timing pulse. At reception of these three signals becomes a signal to the 80 millisecond lockout circuit 84 and sent to the reader ballast circuit 9o.

A second output from the 20 millisecond delay circuit 86 goes to the tape register gate circuit 92. The output side of this gate circuit is with the Column and row register circuits 44 and 46 are connected to evaluate the new data.

In the time in which the contents of the column and row register circuits 44 and 46 is fed to the bit and type gate circuits 48 and 5o which form the comparator circuit of Forming a learning unit, signals for controlling the lamr pen of the keyboard lamp field. The second column register output side is connected to the column decoder 94, while the second output side of the row register circuits 46 is connected to the row end or 96. Consecutive Output lines of the column decoder are connected to the row ends: encoder units 98, ioo and Io2. These decoders are also connected to the output side of the row register circuits 46. The slide decoder Io4 receives the Output signals from the column decoder 94 and the row decoder 96. -.

It can be seen that the upper output line from the row end, or ^ S, is connected to the ballast gate and terminal circuit 8o as well as to the sliding encoder Io4. This output signal operates the ballast gate and is also directly connected to the multi-medium units comprising the sound control circuit Io6 and the image control circuit Io8.

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The output side of all decoder units is connected to the individual lamps of the illuminated keyboard lamp field Ho. The output lines from the decoder units are individual output lines that connect to the individual lamp circuits of the illuminated keyboard lamp field.

Figure 3 shows the circuit of Figure 2. The keyboard Ίο according to Figure 2 has seven output lines over which the ASCII digital code signals be directed. Correspondingly, the tape reader 42 has seven output lines for corresponding code signals, which are sent out by the tape reader unit. Each of these lines is connected to a register, e.g. a storage register 124. It has an output line connected to the bit gate 126 where the signal is connected to the The incoming signal along line 128 is compared to determine whether the two digital pulse signals match of the binary code. Gate 126 and the other six gates are exclusive NOR aggregates that are derived from Texas Instruments under Catalog No. SN 7486 will. The output from each of these lines is fed to type gate 128, which has a SN 7430 NANT gate eight inputs, one high output for an error and one low voltage output for a proper match having. The eighth input line 13o to gate 128 comes from the reader standby circuit, wo a voltage is applied when the student presses the reader standby switch 132, or automatically when that Tape feed signal is given when the previously pressed key has been a correct match.

Inverse gate 134 is an AND gate that acts as the error gate in the learning and exercise facility. It receives the positive strobe pulse from gate 136 and the positive one Error output signal from gate 128. The strobe pulse is a timing pulse of 5 microseconds with a

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delay of Io milliseconds. This timing pulse will both the error gate circuit and the correct gate circuit to ensure that both circuits are cleared and the effects of transient noise be avoided.

The error gate 134 links the strobe pulse and the error signal according to the AND function and sends negative voltage the gate I38, which forms one half of the flip-flop circuit. The output from AND gate I38 is reversed to to send a positive pulse to the second gate unit 14o. This is also an reverse AND gate that controls the positive pulse with the voltage on the reset line according to the AND function, whereby a negative output signal is generated, which with the error lamp line 142 through an inverter and to the error counting transistor 144 through a Inverter is connected. The output signal also becomes a Power-on inhibit circuit 146 is supplied which acts as a switch is used for the test mode of the device. The output from gate 138 is taken along line 148 sent to the transistor control circuit of the lamp field and to the level one control switch.

Correct gate 15o combines the delayed strobe pulse from gate 136, the reverse match signal from FIG gate 128 and the state of the line to the fault lock-on switch 146 according to the NAND function, indicating that there is no outstanding error.

The output from the correct gate I50 forms one Pulse to the first gate stage 152 of the correct flip-flop circuit, whereby the second gate stage 154 is activated, whose output signal is connected to the gate of the via an inverter Control transistor 156 for the correct counter is connected. The output from gate 154 is also passed along

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sent back on line 158 in order to ensure the resetting of the second gate stage I4o of the error flip-flop circuit. The gate I4o can also be reset by the switch I6o which is the student's reset button.

The output from correct gate 15o is also sent along line 162 to ballast gate 164, which is an OR gate that passes the signal to AND gate 166.

The incremental pulse line is also variable with the Timing circuit 167, and the output sides of the NAND gate 166 and the variable timing circuit are using the 20 millisecond delay multivibrator circuit 168 connected. The band ballast timing circuit, generally referenced 17o, comprises a unijunction transistor circuit, generates the timing pulses, the output signal of which NAND-functioned with the signal going through the ballast key 172 is linked. These signals pass through the reverse AND gate 17 * t, to the 20 millisecond delay multivibrator circuit 168 and to the base of the band ballast transistor I8o. The output from gate 166 or the variable timing circuit 167 generates a pulse for actuating circuit 168. The unit generates the required pulse width to drive the transistor for a sufficient time to energize the tape ballast coil.

The output from the multivibrator 176 corresponds to FIG 80 millisecond blocking circuit according to FIG. 2, and generated an 80 millisecond pulse that determines the speed of the Vbrschaltimpulse controls through the AND gate I66.

The stage one switch 182 is AND function with the error output signal from the error flip-flop circuit

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line l48 linked, and the reverse signal to the gate 184 to be fed together with the output signal from the 80 millisecond lockout circuit 176 to control the fault flashing lamp, thereby controlling the flashing of the lamp.

The second output from the 20 millisecond multivibrator 168 is passed through gates 186 and I88 which are the tape register gate circuit 92 in FIG. The output of this circuit is a pulse that travels along the line 190 gets to the seven storage registers, to the seven Pulse memory registers and clear them from tape read lines 122 to receive the new signal.

The control of the lamps on the lamp field is through use a column and row decoder arrangement connected to the seven registers. The registers are storage register units, manufactured by Texas Instruments under Catalog No. SN 7475.

The output signals from the upper three registers are separated connected to the column decoder 192, which is a demultiplexing unit and corresponds to the column end encoder 94 in FIG.

One of the output signals from decoder 192 passes through the AND gate 194 to the demultiplexing unit 196 with four through 16 lines connecting to the four output lines 198 associated with the four single in-line storage registers are connected. Output lines 2oo from the Rowing 'or I96 control the individual lamps on the keyboard lamp field by fading in the lamp transistor circuits.

In a corresponding manner, the gate 2o2 sends the output signal from the column decoder 192 to the row decoder 2o4, where it is with the output of the four individual row registers

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is combined, which run along the lines 2o6. The rower. Or 2o4 and the other rowers, or are Demultiplex units sold by Texas Instruments under the Catalog No. SN 74154 are manufactured and sold. The output from the row end: or 2o4 passes along individual output lines I06 to additional individual lamps on the keyboard lamp panel.

The third output from the end of the column,. Or 192 arrives along and through the AND gate 21o to the end of the row,. or 212, where the signal is combined with the row register memory signals running along lines 214. The individual output lines 216 from the De. Or 212 are with additional connected to the individual lamps of the lamp field.

A single output "" from the column end or 192 is passed to the end of the row, or 22o along line 218 where it is combined with signals coming along the input lines 222 run from the four individual row registers. The sliding control lines leave the row end or 22o and run along individual output lines that are general are designated by 224. Most of these lines that generally indicated at 226, extend to the ballast gate 164. Additional output lines 228 are direct with Lines 226 and connected to individual auxiliary units, such as e.g. a picture control in the multi-medium unit or an audio control. These lines control both the switching of the belt and the individual auxiliary equipment, used in conjunction with the keyboard learning machine.

The row end or unit 22o also includes two pairs of shift control output lines 23o and 232 on. The lines 23o

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are connected to the column encoder output lines 234 and run through the gates generally designated 236.

The sliding gate Io4 according to FIG. 2 corresponds to that in FIG. 3 circuit labeled 238. Outputs 24o and 242 are with the numeric or alphabetical switchover on the keyboard tied together.

Figure 4 shows a circuit for controlling one of the MultiMedium units, such as the picture advance control or « the audio band advance control. The circuit shown applies in particular to a frame incrementing device for image display, such as 34 in Figure 1. Terminal 248 is connected to one of lines 228 in Figure 3, where it passes through a pulse generation circuit 25o and through inverters 252 and 254. The amplifier 256 amplifies the signal

and sends it through relay coil 258, closing switch 260 to provide actuation current to the frame advancing mechanism to the image display device.

FIG. 5 shows the circuit for controlling the lamps in the lamp field. The positive voltage is sent to the terminal 262 to illuminate the light bulbs 264. The transistor 266 is an individual control transistor assigned to each incandescent lamp, which has an actuation gate current that is derived from one of the Output lines of one of the row encoders according to FIG. 3 are fed to line 268. This operates a transistor so that current can flow through it to the main control transistor 27o. The transistor 27o is a control transistor to which all Lines run from the transistors of all lamps. A gate pulse that allows electricity to pass through earth is going along sent to line 272. This current is supplied through gate 184 in FIG.

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Operating mode . >'■

The program text indicating the keys to be pressed by the student indicates is supplied by a perforated paper tape 32 which is attached to the tape reader 12 by the student before the start of the exercise will. The switch 28 is flipped and the student is ready to begin the exercise. For the beginner, the Schaiter-26 rotated to the level 1 position for operation, and the first key to be depressed by the student is illuminated on the lamp field 18.

The symbols of the typewriter keyboard are indicated on the lamp field, although these symbols are not shown in FIG are.

When the first letter to be added appears on the lamp field, which indicates both the letter as such and the position of the key on the keyboard, the student suggests this button to start exercising.

When the corresponding key is hit on the keyboard, the perforated tape automatically moves to the next key to be hit advanced, and this illuminates the corresponding lamp on the lamp field; the lamp fields themselves also show to the key designation a color-coded arrangement of key groups that correspond to a specific finger assigned to the operator. The representation in this way acts as a clue or aid for the student, which not only shows him the key to be struck, but also the finger required to hit the key will. This method, in which the keyboard serves as an indication of the key to be pressed, is permitted allows the student to learn the keyboard in half the time typically required in traditional classroom teaching is required.

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The teaching and exercise program will bring the student to the pace of his own performance when he is ready for the next symbol, since after striking it After pressing the correct key, the key to be pressed is immediately displayed to the student on the lamp field will. As a result, the student progresses quickly or slowly in the teaching program depending on his own ability away.

In the event of a mistake, when the student presses a wrong key strikes, the error lamp 24 is lit and the student must press the error reset button 25, which is located in located in the lower right corner of the keyboard. This method the acknowledgment of an error, in connection with the direct reference to the one to be pressed by the student Key therefore increases the student's concentration on the key and the mistake made and reduces repetition of errors of this kind.

In Figure 3, the error reset switch is labeled I6o, and the error and correct are transistor control circuits denoted by 144 and 146, respectively.

In exercise level 2, the program is also presented to the student by the tape, but the performing lamps, the serve as a direct reference for the student in exercise level 1, are not enlightened to give them the program, This is achieved by turning the mode switch 26 to the exercise level 2 position. This will make the Switch 182 in FIG. 3 is open so that no signal passes through gate 184 to main control transistor 27o in FIG unless an error signal is sent along line 148 in FIG. The main control transistor 27o in the off position prevents one of the lamps on the lamp field from being lit.

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In exercise level 2, the student has a prepared text that corresponds to the program on the perforated tape matches. The student copies the prepared text and the perforated tape program enables his Compare writing accuracy. At this level it is also possible to teach the student the subject matter through the MultiMedium unit either with the visual display device 34 or with an audio soundtrack. It should be noted that the student in turn continues at his own speed in the teaching program, so that a MultiMedium Code for switching the single image or the port switching of a tape to give a teaching instruction to be given to the student in any timeframe since the student came the perforated tape in the tape reader only after the instruction from the multi-medium unit has been completed 14 moves when the student begins the exercise they are asked to perform.

The multi-medium control signal comes from the row decoder block 96 in Figure 2 and the row decoder unit 22o in Figure 3. It should be noted that this control pulse ^ the multi-medium unit goes out along the line 228 and at the same time an increment pulse goes through the increment gate 164. The view- and hearing programs can be presented to the student separately or at the same time, as desired.

In the test modes for levels 1 and 2, the need to reset switch 25 in Figure 1 (switch I60 in Figure 3) to press. In these test modes a student's progress is constantly measured. The mode switch 146 in Figure 3 of the a power-on disable switch, the details of which are not shown, is bypassed, giving a direct signal from the flip-flop gate I4o is sent to the error gate I50.

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Another test mode in which the working speed of the student is determined by the machine, is also available to the student. In this operating mode the program tape reader is advanced at a certain speed, which corresponds to a certain writing speed. The variable timing circuit 167 in Figure bypasses the gate 166 and sends an output signal the multi-vibrator circuit 168 to automatically tighten the tape to switch on at a certain point in time after receiving a preceding incremental pulse. This ■ feature enables it for the teacher, the student the self-rubbing program with everyone to present the previously selected speed, for example with 2ο or 3o words per minute. If the student has this typing speed mastered, he remains in front of the switching controlled by the variable time control circuit and avoids an error result for mismatches between the values entered by the tape reader and the keyboard. If he' compared to the desired (old speed lags behind, increased his error result becomes clear.

When the variable timing in the practice and teaching level 1 is used, it enables the student to set the writing speed for himself with who can operate the keyboard.

With regard to the multi-medium devices, it should be noted that the adaptability of the keyboard learning and exercise machine the presentation of visible and audible teaching material of any kind, so that it is possible to perform spelling tasks using a typewriter hash keyboard, To ask shorthand, code tasks, special number problems and tabulation problems. It is also possible to teach and learn to read with this machine.

The keyboard unit can urter use of the multi-medium equipment can also be used to develop other skills

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to teach, such as shorthand. A shorthand symbol is visually presented to the student and he must match the symbol Write the corresponding longhand equivalent on the keyboard. For example, a picture can be written in shorthand Sentence on the screen by the multi-medium output code signal to get presented. The student is writing then the sentence shown and the program of the keyboard learning machine on which the written sentence is encoded, compares the written sentence in correct form to determine if the sentence was written correctly by the student has been.

It can be seen that the keyboard practice and The learner is a versatile compound machine suitable for a wide variety of teaching purposes. The usage a passive logic in the machine, with dfer a simple comparison is done with perforated tape input values gives the machine the power of many complex computer-type ones Systems without having to store large amounts of data.

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Claims (18)

Claims . _O U4 ι y Io Electronic keyboard learning and practice machine, labeled by a) a keyboard with a multiplicity of keys, each of which is a single electric key when it is pressed generates encrypted signal, b) a lamp field with a plurality of indicator lamps and characters, each arranged so that they correspond to a specific key on the keyboard, c) a program device for generating a code Door every key of the keyboard and for the optional presentation of successive key code signals, which correspond to a particular key to be pressed, and d) an electrical comparator device with the Keys of the keyboard and connected to the program device to the code signal from the program device and from a depressed key to receive and the two signals for equality with each other to compare, and to generate an output signal representing whether the received code signals matched or not. 2. Electronic keyboard learning and practice machine according to Claim 1, characterized in that a) the encrypted output signals of the program device and keyboard keys are digital signals and b) the electrical comparator device is a digital comparator is. 3. Electronic keyboard learning and practice machine after Claim 1, characterized in that the program device is a perforated tape reading device, the electrical output code signals generated. 4. Electronic keyboard learning and practice machine according to 309810/0218 - 2o - Claim 1, characterized in that the electrical comparator device comprises a comparison gate circuit . 5. Electronic keyboard learning and practice device behind Claim 4, characterized in that a) the gate system several "bit" gates and b) comprises a "type" gate to which the output signals the bit gates are fed. 6. Electronic keyboard learning and practice machine after Claim 1, characterized in that the electrical comparator device has a plurality of individual memory shift registers which are connected to the program means for receiving and storing the code signals representing the keys the keyboard. 7. Electronic keyboard learning and training machine according to claim 1, characterized in that an error recording device is connected to the electrical comparator means to the output signal of the comparator and indicate the occurrence of an error. 8. Electronic keyboard exercise and learning machine behind Claim 1, characterized in that a) a detection device for matching signals with the output side of the electrical Comparator device is connected to a matching Signal between the input code signals and a control signal pulse to generate, and b) a program switching device with the program » device and is connected to the output side of the detection device for matching signals, to receive the output signal and the program means to generate the next code signal to move forward. 309810/0218 - 21 - 9. Electronic keyboard learning and exercise machine, marked by a) a keyboard with several keys, each of which generates a single electrical code signal when struck, b) a lamp field with a plurality of indicator lamps and characters, each arranged so that their Position on the lamp field corresponds to a specific key on the keyboard, c) a program device for generating a code for each key of the keyboard and for the optional presentation of successive key code signals, which correspond to a specific key to be pressed, d) an electrical comparator device with the Keys of the keyboard and is connected to the program device to read the code signal from the program input direction and to receive from a pressed key and to compare the two signals for equality with one another, and to generate an output signal, that shows whether or not there was a match between the code signals received, e) a plurality of storage registers connected to the output side of the program device for output code signals to be recorded and stored by the program facility, and f) a decoder device with several storage registers is connected to receive its output signal and an output signal on one of several Generate decoder output lines, each with individual lamp in the lamp field are connected, which correspond to the input code signal. 10. Electronic keyboard learning and practice machine after Claim 9> characterized in that the decoder device comprises several demultiplex decoders, each with 309810/0218 - 22 - connected to a different group of memory register outputs are. 11. Electronic keyboard learning and training machine according to claim Io, characterized in that a) the registers in a group of column registers and a group of row registers are divided, b) one of the decoders is a column decoder with which the output side of the column registers is connected, c) the other decoders are series decoders with which the Output sides of all row registers connected are and d) another output line of the column decoder is connected to an input side of each row decoder. 12. Electronic keyboard learning and practice machine, marked by a) a keyboard with a large number of keys, each of which generates a specific code signal when pressed will, b) a program device for generating a code signal which corresponds to the signal generated by each key on the keyboard is equivalent to, c) an electrical comparator device which is connected to the keys on the keyboard and to the program device is to read a code signal from a depressed key and the code signal from the program device to receive and compare with each other and to generate an output signal that depends on whether the received Code signals matched or not, and d) a display device connected to the program device, which indicates the key on the keyboard corresponding to the key current signal generated by the program device is equivalent to. - 23 - 3 O 9 810/0218 13. Electronic keyboard learning and training machine according to claim 12, characterized in that the program device has a special code output line for operating auxiliary devices includes. 14. Electronic keyboard learning and exercise machine according to claim 13s, characterized in that an optical display device, which displays material to be written to the student on the keyboard, is connected to the keyboard machine, and From the outgoing management of the program initiation for special Auxiliary devices is controlled. 15. Electronic Tast afcur learning and exercise machine according to claim 12, characterized in that the electrical comparator means a variable timing circuit for Control of the program device includes. 16. Electrolysis he keyboard learning and exercise machine according to claim 14, characterized in that an error recording device is connected to the output side of the comparator device is connected to count the total number of mismatched signals received by the electrical comparator- ^ facility to be received. 17 · Electrical comparator device according to claim 12, characterized marked that a) the program device comprises a perforated tape reader and a perforated tape and b) a fault recording device with the comparator device is connected, which includes a colored pencil to identify the perforated tape, if a battered one The key on the keyboard does not correspond to the key encrypted on the Lochb aid. 18. Electronic keyboard learning and practice machine after - 24 309810/0218 Claim 12, characterized in that a program maintenance device is connected to the output side of the electrical comparator means to generate a control signal to generate for the port circuit of the program device when the signal from the comparator device the Indicates correspondence between the signal of the program direction and the signal of the keyboard. 309810/0218