CN2687760Y - Digitalised radir point demonstrating blackboard - Google Patents
Digitalised radir point demonstrating blackboard Download PDFInfo
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- CN2687760Y CN2687760Y CN 200320109796 CN200320109796U CN2687760Y CN 2687760 Y CN2687760 Y CN 2687760Y CN 200320109796 CN200320109796 CN 200320109796 CN 200320109796 U CN200320109796 U CN 200320109796U CN 2687760 Y CN2687760 Y CN 2687760Y
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- driving circuit
- displacement driving
- red
- input end
- radix point
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Abstract
The utility model relates to a teaching appliance, in particular to a digitized radix point demonstrating blackboard, comprising a panel and a power supply. The panel is provided with a plurality of display lamps L1 which are laterally arranged in an equidistant distance. The display lamp can be considered as the position of the radix point. A directions select switch on the panel can change the moving direction of the radix point. When the manual knob inputs the signal to the control circuit, the control circuit shifts the position of the energized display lamp left or right for one bit. A numerical code tube displays the movable digits of the radix point simultaneously, and a loudspeaker sends out a prompting tone. The utility model collects the light and electricity as integration to sufficiently mobilize the sense organs of the students such as the eye, the brain, etc. The unconsciousness attention of the students can be attracted by the synthesis gravitational force to solve the technical problems of expensive equipment and poor teaching effect in the existing teaching of the radix point shift. The digitized radix point demonstrating blackboard has the advantages of low cost, small volume, light weight, convenient carrying, simple operation and strong interactivity.
Description
Technical field
The utility model relates to a kind of teaching appliance.
Background technology
In primary school math teaching, the radix point displacement causes that the decimal size variation is a content of courses, wherein a long number being changed into " ten thousand " or " hundred million " is that the number of unit and the number that omits long number " myriabit " or " hundred million " back are two hang-ups in this content of courses, and the common ground of these two big difficulties in teaching all requires the student where to make " myriabit " or " hundred million " exactly.Existing form of teaching mainly is common explanation or two kinds of methods of multimedia animation demonstration, common explanation had only for 2～3 class hour, and when on blackboard, describing, " radix point " is interrupted, be " extremely ", the student looks like uninteresting, the student is lacked attractive force, can only memorize mechanically radix point " movement law ", teaching efficiency is very poor naturally; Though the multimedia animation demonstration equipment has certain effect, the real-time interactive effect when being difficult to reach normal the teaching between the teachers and students, and need a large amount of teaching funds, for regular school, be difficult in the recent period popularize.
The utility model content
The utility model has solved the technical matters of apparatus expensive, teaching efficiency difference in the background technology.
Technical solution of the present utility model is: a kind of digitizing radix point demonstration blackboard, comprise panel B, power Vcc, described panel B is provided with a plurality of display lamp L1 of horizontal equidistant arrangement, its special character is: also be provided with hand push button K1 on the described panel B, direction selector switch K2, control circuit U1; Described control circuit U1 comprises pulse generating circuit U2 and displacement driving circuit, and described displacement driving circuit comprises move to right the displacement driving circuit U3 and the displacement driving circuit U4 that moves to left; Described hand push button K1 is connected with the input end of pulse generating circuit U2, the output terminal of described pulse generating circuit U2 is connected with the input end of displacement driving circuit U3 with the displacement driving circuit U4 that moves to left that move to right respectively, the described a plurality of output terminals that move to right displacement driving circuit U3 are connected successively with the input end of described a plurality of display lamp L1, the described a plurality of output terminals that move to left displacement driving circuit U4 are connected with the input end of described a plurality of display lamp L1, the output head grounding of described a plurality of display lamp L1, described direction selector switch K2 are connected with the power end of displacement driving circuit U3 with the displacement driving circuit U4 that moves to left that move to right respectively.
Above-mentioned hand push button K1 is double three post buttons, its input contact 1,1 ' be connected with power Vcc, and its left side normally closed contact 3 is connected with the input end 1,5 of pulse generating circuit U2 respectively with left side normally opened contact 2; The output terminal 6 of described pulse generating circuit U2 is connected with the input end 14 of the displacement driving circuit U3 that moves to right and the input end 14 of the displacement driving circuit U4 that moves to left respectively; Described direction selector switch K2 is a double-point double-throw switch, its input end 1,1 ' be connected with power Vcc, its contact 2,2, left side ' be connected with the power end 16,8 of the displacement driving circuit U3 that moves to right, its contact, right side 3,3 ' be connected with the power end 16,8 of the displacement driving circuit U4 that moves to left.
Above-mentioned panel B is provided with charactron L4 and reset switch K3, and described control circuit U1 comprises shift count circuit U 5; The right side normally opened contact 2 of described hand push button K1 ' be connected with the pulse input end 9 of described shift count circuit U 5, described reset switch K3 is connected with the addition control end 5 of described shift count circuit U 5, and the output terminal of described shift count circuit U 5 is connected with the input end of described charactron L4.
Above-mentioned panel B is provided with left-hand arrow lamp L2 and dextrad arrow lamp L3; The contact, left side 2,2 of described two-way choice K switch 2 ' be connected with dextrad arrow lamp L2 input end, its contact, right side 3,3 ' be connected with left-hand arrow lamp L3 input end.
Above-mentioned panel B is provided with loudspeaker S, the right side normally opened contact 2 of the power end of described loudspeaker S and hand push button K1 ' be connected.
Above-mentioned a plurality of display lamp L1 is a light emitting diode, and its quantity is 9; Described 9 display lamp L1 are transversely arranged to be a row.
The color of above-mentioned 9 display lamp L1 is followed successively by green, red, red, red, green, red, red, red, green.
Above-mentioned a plurality of display lamp L1 is a light emitting diode, and its quantity is 18; Described 18 display lamp L1 are transversely arranged to be two rows, 9 of every rows; The described a plurality of output terminals that move to right displacement driving circuit (U3) are connected successively with the input end of 9 display lamps of last row (L1), and a plurality of output terminals of the described displacement driving circuit (U4) that moves to left are connected with the input end of arranging 9 display lamps (L1) down.
The color of 9 display lamp L1 of above-mentioned every row is followed successively by green, red, red, red, green, red, red, red, green.
The utlity model has following advantage:
1. teaching efficiency is good.The utility model integrates the acousto-optic electricity, can give full play to student's sense organs such as eye-ear-brain, with comprehensive gravitational attraction student's the notice that is not intended to, radix point when particularly demonstrating is " work ", it moves is true to nature, lively, can produce effect gifted with an extraordinary retentive memory.
2. cost is low, volume is little, in light weight, easy to carry.Because the utility model adopts normal blackboard to convert, control circuit adopts common medium scale integration (MSI) to constitute, and have the low characteristics of cost, and weight is suitable with normal blackboard, and it is also convenient to carry.
3. simple to operate, interactive strong.The utility model has only three functional units just can realize the radix point displacement of any direction, and is simple to operate, the interactive raising greatly between the teachers and students.
The explanation of accompanying drawing drawing
Fig. 1, the 2nd, structural representation of the present utility model;
Fig. 3 is the utility model control circuit structured flowchart;
Fig. 4 is the utility model control circuit wiring diagram.
Embodiment
Mainly comprise panel B referring to Fig. 1, Fig. 3 and Fig. 4 the utility model, power Vcc, control circuit U1; Power Vcc can adopt AC transformer that low-voltage DC is provided, and also can adopt the common batteries power supply; Panel B lower middle position has 9 display lamp L1 of horizontal equidistant arrangement, top panel space between the adjacent in twos display lamp can be filled in a multidigit decimal, 9 display lamps are light emitting diode, its color is followed successively by green, red, red, red, green, red, red, red, green, panel B upper middle position has a light-emitting nixie tube L4, there is a left-hand arrow lamp L2 on the right of charactron L4, there is a dextrad arrow lamp L3 on its left side, a hand push button K1 is arranged at top, panel B the right, a direction selector switch K2 and a reset switch K3, wherein hand push button K1 is double three post buttons, direction selector switch K2 is a double-point double-throw switch, reset switch K3 is a regular tap, and there is a loudspeaker S at middle part, the panel B left side; Control circuit U1 is installed in the back side of panel B, comprise pulse generating circuit U2, displacement driving circuit U3 moves to right, displacement driving circuit U4 and shift count circuit U 5 move to left, pulse generating circuit U2 adopts integrated circuit 74LS132, the displacement driving circuit U3 that moves to right, the displacement driving circuit U4 that moves to left adopts integrated circuit CD4017, and shift count circuit U 4 adopts integrated circuit CD40110B; Hand push button K1 input contact 1,1 ' be connected with power Vcc, its left side normally closed contact 3 is connected with the input end 1,5 of pulse generating circuit U2 respectively with left side normally opened contact 2, the right side normally opened contact 2 of the power end of loudspeaker S and hand push button K1 ' be connected the right side normally opened contact 2 of hand push button K1 ' be connected with the pulse input end 9 of shift count circuit U 5; The output terminal 6 of pulse generating circuit U2 is connected with the input end 14 of the displacement driving circuit U3 that moves to right and the input end 14 of the displacement driving circuit U4 that moves to left respectively; 9 output terminals 1,5,6,9,11,3,2,4,7 of displacement driving circuit U3 of moving to right are connected from left to right successively with the input end of 9 display lamp L1 respectively, 9 output terminals 7,4,2,3,11,9,6,5,1 of displacement driving circuit U4 of moving to left are connected from left to right successively with the input end of described 9 display lamp L1 respectively, and the output terminal of described 9 display lamp L1 also connects ground connection afterwards; Direction selector switch K2 input end 1,1 ' be connected with power Vcc, its contact 2,2, left side ' be connected with the power end 16,8 of the displacement driving circuit U3 that moves to right, its contact, right side 3,3 ' be connected with the power end 16,8 of the displacement driving circuit U4 that moves to left, the contact, left side 2,2 of two-way choice K switch 2 ' be connected with dextrad arrow lamp L2 input end, its contact, right side 3,3 ' be connected with left-hand arrow lamp L3 input end; The addition control end 5 of shift count circuit U 5 is connected with power Vcc by reset switch K3, and the output terminal 1,15,14,13,12,3,2 of shift count circuit U 5 is connected successively with input end a, b, c, d, e, f, the g of charactron L4.
Referring to Fig. 2, display lamp L1 can transversely arrangedly be two rows also, 9 of every rows, totally 18,9 output terminals 1,5,6,9,11,3,2,4,7 of displacement driving circuit U3 of moving to right this moment are connected from left to right successively with the input end of 9 display lamp L1 of last row respectively, 9 output terminals 7,4,2,3,11,9,6,5,1 of displacement driving circuit U4 of moving to left are connected from left to right successively with the input end of 9 display lamp L1 of row down respectively, and the output terminal of described 9 display lamp L1 also connects ground connection afterwards.
The utility model principle:
The utility model in use, assumed decimal point is moved to the left, direction selector switch K2 guiding right side then, then rightmost display lamp energising, all the other display lamp outages, charactron L4 shows " 0 ", the left-hand arrow lamp L3 demonstration of switching on, then the display lamp L1 of this energising is considered to the radix point position, as long as this moment is by a hand push button K1, then hand push button K1 is to signal of pulse generating circuit U2 input, pulse of the corresponding output of pulse generating circuit U2, move to left displacement driving circuit U4 under the driving of this pulse, disconnect the display lamp of energising, this adjacent display lamp of display lamp left side of conducting, loudspeaker S sends a voice prompt simultaneously, hand push button K1 is simultaneously to signal of shift count circuit U 5 inputs, and the input of this signal is that shift count circuit U 5 drives charactron L4 demonstration " 1 ", can think that then radix point has been moved to the left one; When pressing hand push button K1 once more, the display lamp of conducting just now is de-energized, and its adjacent display lamp of left side is switched on, and simultaneously, charactron shows " 2 ", and loudspeaker S sends a voice prompt, and then radix point has been moved to the left one again, and the like; When the needs radix point moves right, only need direction selector switch K2 guiding right side, press reset switch simultaneously, then leftmost display lamp energising, all the other display lamp outages, charactron L4 shows " 0 ", the dextrad arrow lamp L2 demonstration of switching on, and this moment, the utility model was in the radix point standby condition that moves to right.
Claims (9)
1. a digitizing radix point is demonstrated blackboard, comprise panel (B), power supply (Vcc), described panel (B) is provided with a plurality of display lamps (L1) of horizontal equidistant arrangement, it is characterized in that: also be provided with hand push button (K1) on the described panel (B), direction selector switch (K2), control circuit (U1); Described control circuit (U1) comprises pulse generating circuit (U2) and displacement driving circuit, and described displacement driving circuit comprises move to right the displacement driving circuit (U3) and the displacement driving circuit (U4) that moves to left; Described hand push button (K1) is connected with the input end of pulse generating circuit (U2), the output terminal of described pulse generating circuit (U2) is connected with the input end of displacement driving circuit (U3) with the displacement driving circuit (U4) that moves to left that move to right respectively, the described a plurality of output terminals that move to right displacement driving circuit (U3) are connected successively with the input end of described a plurality of display lamps (L1), the described a plurality of output terminals that move to left displacement driving circuit (U4) are connected with the input end of described a plurality of display lamps (L1), the output head grounding of described a plurality of display lamp (L1), described direction selector switch (K2) are connected with the power end of displacement driving circuit (U3) with the displacement driving circuit (U4) that moves to left that move to right respectively.
2. digitizing radix point demonstration blackboard as claimed in claim 1, it is characterized in that: described hand push button (K1) is double three post buttons, its input contact (1,1 ') is connected with power supply (Vcc), and its left side normally closed contact (3) is connected with the input end (1,5) of pulse generating circuit (U2) respectively with left side normally opened contact (2); The output terminal (6) of described pulse generating circuit (U2) is connected with the input end (14) of the displacement driving circuit (U3) that moves to right and the input end (14) of the displacement driving circuit (U4) that moves to left respectively; Described direction selector switch (K2) is a double-point double-throw switch, its input end (1,1 ') is connected with power supply (Vcc), its contact, left side (2,2 ') is connected with the power end (16,8) of the displacement driving circuit (U3) that moves to right, and its contact, right side (3,3 ') are connected with the power end (16,8) of the displacement driving circuit (U4) that moves to left.
3. digitizing radix point demonstration blackboard as claimed in claim 2, it is characterized in that: described panel (B) is provided with charactron (L4) and reset switch (K3), and described control circuit (U1) comprises shift count circuit (U5); The right side normally opened contact (2 ') of described hand push button (K1) is connected with the pulse input end (9) of described shift count circuit (U5), described reset switch (K3) is connected with the addition control end (5) of described shift count circuit (U5), and the output terminal of described shift count circuit (U5) is connected with the input end of described charactron (L4).
4. as claim 1 or 2 or 3 described digitizing radix point demonstration blackboards, it is characterized in that: described panel (B) is provided with dextrad arrow lamp (L2) and left-hand arrow lamp (L3); The contact, left side of described two-way choice switch (K2) (2,2 ') is connected with dextrad arrow lamp (L2), and its contact, right side (3,3 ') are connected with left-hand arrow lamp (L3).
5. digitizing radix point demonstration blackboard as claimed in claim 4, it is characterized in that: described panel (B) is provided with loudspeaker (S), and the power end of described loudspeaker (S) is connected with the right side normally opened contact (2 ') of hand push button (K1).
6. as claim 1 or 2 or 3 or 5 described digitizing radix point demonstration blackboards, it is characterized in that: described a plurality of display lamps (L1) are light emitting diode, and its quantity is 9; Described 9 display lamps (L1) are transversely arranged to be a row.
7. digitizing radix point demonstration blackboard as claimed in claim 6, it is characterized in that: the color of described 9 display lamps (L1) is followed successively by green, red, red, red, green, red, red, red, green.
8. as claim 1 or 2 or 3 or 5 described digitizing radix point demonstration blackboards, it is characterized in that: described a plurality of display lamps (L1) are light emitting diode, and its quantity is 18; Described 18 display lamps (L1) are transversely arranged to be two rows, 9 of every rows; The described a plurality of output terminals that move to right displacement driving circuit (U3) are connected successively with the input end of 9 display lamps of last row (L1), and a plurality of output terminals of the described displacement driving circuit (U4) that moves to left are connected with the input end of arranging 9 display lamps (L1) down.
9. digitizing radix point demonstration blackboard as claimed in claim 8, it is characterized in that: the color of described 9 display lamps of every row (L1) is followed successively by green, red, red, red, green, red, red, red, green.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109796 CN2687760Y (en) | 2003-11-20 | 2003-11-20 | Digitalised radir point demonstrating blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109796 CN2687760Y (en) | 2003-11-20 | 2003-11-20 | Digitalised radir point demonstrating blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687760Y true CN2687760Y (en) | 2005-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320109796 Expired - Fee Related CN2687760Y (en) | 2003-11-20 | 2003-11-20 | Digitalised radir point demonstrating blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687760Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110349449A (en) * | 2019-07-15 | 2019-10-18 | 济南职业学院 | A kind of multifunctional interactive child educates equipment |
-
2003
- 2003-11-20 CN CN 200320109796 patent/CN2687760Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110349449A (en) * | 2019-07-15 | 2019-10-18 | 济南职业学院 | A kind of multifunctional interactive child educates equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |