CN2509643Y - Examination mark inputting device - Google Patents
Examination mark inputting device Download PDFInfo
- Publication number
- CN2509643Y CN2509643Y CN 01251556 CN01251556U CN2509643Y CN 2509643 Y CN2509643 Y CN 2509643Y CN 01251556 CN01251556 CN 01251556 CN 01251556 U CN01251556 U CN 01251556U CN 2509643 Y CN2509643 Y CN 2509643Y
- Authority
- CN
- China
- Prior art keywords
- keyboard
- data
- controller
- input device
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
The utility model relates to a score entering device which comprises a plurality of score entering devices and is a whole structure for each score entering device through a repeater to the controller, wherein, the score entering device is connected with the second communicating device of the repeater through the data bus and the first communicating signal by the keyboard as the input signal; the first communicating device of the repeater is connected with the third communicating device through the data bus; and a controller is connected with the 232 connector of the computer through the second communicating convertor. The utility model can reduce the score entering cost, enhance the score entering efficiency, reduce the error ratio, reduce the working staff and the working procedure such as filling score and reading the card; the score automatic entering work can be carried on at the same time with correcting the paper; the single score entering step is leaved out, the correcting time is reduced and the working efficiency is enhanced by two to three times; moreover the utility model is not only applicable to the objective choice subjects, but also is applicable to the subjective non choice subjects.
Description
Affiliated technical field
The utility model relates to data entry unit, is specially a kind of exam score input device.
Background technology
At present, exam score typing mode is two kinds: a kind of for manually embracing upward machine of volume, be to organize the typing personnel that the mark on the paper is entered in the computing machine separately, after promptly examination finishes, after each big topic branch of synthetic and total points, mode is entered into computing machine with mark by hand, and its weak point is: at first need to organize special messenger's typing, the cost height; Secondly owing to manual entry, efficient is low; Because minority typing personnel repeat identical work for a long time, error rate is higher in addition.Another kind is the answer sheet automated manner, after promptly examination finishes, with optical mask (numeral) recognizer (OMR, ICR) scanning answer sheet, automatic typing mark, its weak point is: restricted application, promptly only be applicable to optionally objective item, can not be applicable to nonselective subjective item, to scribble the card process cost higher owing to increased.
Summary of the invention
In order to overcome cost height, deficiencies such as efficient is low, error rate is high, restricted application in the existing mark typing mode, the utility model provides a kind of exam score input device, it has not only reduced exam score typing cost, has improved the exam score efficiency of inputting, has reduced error rate, is applicable to whole examination question types simultaneously.
Technical solution of the present utility model is: comprise that polycomponent counts input device, for every number of components input device through the general structure of a repeater to controller, wherein every number of components input device structure is identical, the mark input device is that input signal is connected with the second communication device of repeater by data bus through the first signal of communication converter with the keyboard, first communicator of repeater, be connected with the third communication device of controller by data bus, controller links to each other with computer 232 interface by the second communication signal converter.
Described mark input device comprises upper shell, lower house, keyboard liner plate, display board and control circuit, wherein lower house is the rectangular case structure that an end is tilted to, its sloping portion back side is provided with the slot that is connected by line with repeater, and slot is provided with out, goes into bus contact and attaching plug; The upper shell shape matches with lower house, be flush-mounted in lower house, be provided with the circuit board that the dress control circuit is used between the upper and lower casing, keyboard liner plate, display board are plugged in respectively on the bearing of base, sloping portion of lower house, the keyboard liner plate is provided with keyboard, display board is provided with display, and keyboard is connected with control circuit by winding displacement with display; Upper shell by its level square hole and the display window set keyboard of sloping portion and display in it; The angle of described lower house sloping portion and base is 90～180 °;
Control circuit in the described mark input device comprises first single-chip microcomputer, keyboard display controller, first memory, the first signal of communication converter; First single-chip microcomputer is connected with first memory by data line, be connected with keyboard display controller by the I/O port, data transmission line, Data Receiving line by serial port links to each other with the first signal of communication converter again, and the described first signal of communication converter is by the second communication device of external bus to repeater; Keyboard display controller links to each other with display by the video data line, and links to each other with keyboard by the keyboard data line;
Described repeater comprises second singlechip, the second～four storer, the first～two communicator, first data latches, first code translator, the first～two serial o controller; Data transmission line, Data Receiving line and I/O port that its annexation is a second singlechip by serial port are connected to the first～two communicator through the first～four analog switch; The data-signal of second singlechip is also through first data latches to the second～four storeies, and its address wire and read-write control end directly are connected with the second～four storer respectively; Second singlechip is connected with first and second serial o controller and first code translator respectively by control line, and its output terminal of first code translator is received the sheet choosing end of the second～four storer; Described first communicator is connected with the third communication device of controller by data bus;
Described controller comprises the 3rd single-chip microcomputer, the five～seven storer, third communication device, second data latches, the three～four serial o controller, second communication signal converter, second code translator; Data transmission line, Data Receiving line and I/O port that its annexation is the 3rd single-chip microcomputer by serial port are connected to third communication device and second communication signal converter through the five～eight analog switch; The data-signal of the 3rd single-chip microcomputer is through second data latches to the, five～seven storeies, and its address wire and read-write control end directly are connected with the five～seven storer respectively; The 3rd single-chip microcomputer is connected with third and fourth serial o controller and second code translator respectively by control line, and its output terminal of second code translator is received the sheet choosing end of the five～seven storer; Described second communication signal converter is connected on 232 interfaces of computing machine;
Described mark input device is 1～32 group, and every group is 1～31; Described bus is 485 buses or CAN bus; Described display is nixie display or LCD, and wherein nixie display adopts eight LED charactrons; Described keyboard is provided with 18 function keys, be specially: the 1, the 2,3,4,5,6,7,8,9, the 0th, data entry key, be provided with in addition withdraw from, on turn over, turn over down, typing, transmission, modification key, Enter is an acknowledgement key, ". " is decimal key, and described 18 function keys are connected with the keyboard data line of keyboard display controller respectively.
Principle of work of the present utility model is:
The mark input device is by fixing keypad input data in the enclosure, and transfer data to keyboard display controller, be sent to first memory through first single-chip microcomputer, convert logic level signal to signal of communication through the first signal of communication converter again, to external data bus; The data that repeater is gathered the mark input device by data bus, with data storage in the second～four storer; When controller arrives the repeater image data by data bus, data are taken out from the second～four storer, be sent in the controller by third communication device; When controller when repeater has been gathered data, in 232 interfaces are delivered to database on the computing machine, carry out data processing by the second communication signal converter by SQL server software.
The beneficial effects of the utility model are:
1. reduce exam score typing cost, improve the exam score efficiency of inputting, reduce error rate.The utility model comprises mark input device, repeater, controller, its annexation is the first signal of communication converter of mark input device, be connected with the second communication device of repeater by data bus, first communicator on the repeater, be connected with the third communication device of controller by data bus, controller links to each other with computer 232 interface by the second communication signal converter on it; The utility model is compared with traditional input method, both reduced the staff, working links such as full-filling mark, reading card have been reduced again, can when declaring volume, carry out the automatic typing work of mark, omitted the step of independent mark typing, saved cost, shortened and mark examination papers the time, increase work efficiency 2～3 times, avoided the people to be the typing mistake.
2. applied widely.The utility model both had been applicable to optionally objective item, also can be applicable to nonselective subjective item.
Description of drawings
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is Fig. 1 mid-score input device circuit block diagram.
Fig. 3 is Fig. 1 mid-score input device circuit theory diagrams.
Fig. 4 is Fig. 1 mid-score input device structural representation.
Fig. 5 is a lower house front view among Fig. 4.
Fig. 6 is the A-A view of Fig. 5.
Fig. 7 is the upward view of Fig. 5.
Fig. 8 is a upper shell front view among Fig. 4.
Fig. 9 is the rear view of Fig. 8.
Figure 10 is the B-B view of Fig. 9.
Figure 11 is the upward view of Fig. 8.
Figure 12 is embodiment 1 circuit block diagram.
Figure 13 is a keyboard front view among Fig. 4.
Figure 14 be among Fig. 4 slot P to view.
Figure 15 is a repeater circuit schematic diagram among Fig. 1.
Figure 16 is Fig. 1 middle controller circuit theory diagrams.
Embodiment
Be described in further detail the utility model below in conjunction with embodiment and accompanying drawing.
Shown in Fig. 1～16, the exam score input device, by mark input device 1, repeater 2, controller 3 is formed, comprise two number of components input devices 1, for every number of components input device 1 through the general structure of a repeater 2 to controller 3, wherein every number of components input device 1 structure is identical, mark input device 1 is that input signal is through the first signal of communication converter U17 (adopting 485 chips) with keyboard 131, be connected with the second communication device U3 of repeater 2 by 485 buses, the first communicator U2 of repeater 2, be connected with the third communication device U30 of controller 3 by data bus, controller 3 links to each other with computer 232 interface by second communication signal converter U1 (adopting the MAX232 chip); Wherein first, second and third communicator adopts 75176 chips;
As shown in Figure 2, keyboard 131 is sent data-signal into keyboard display controller U14, keyboard display controller U14 is transported to the display 141 and the first single-chip microcomputer U15 with data-signal, with data presentation to the LED charactron, and receive the instruction of the first single-chip microcomputer U15, the first single-chip microcomputer U15 can deposit among the first memory U16 after receiving the data-signal that keyboard display controller U14 transmits, and the data transmission of calling among the first memory U16 gives the first signal of communication converter U17, connects outside 485 buses by the RJ11 connection terminal on the wiring board;
As shown in Figure 3, the control circuit in the mark input device 1 comprises the first single-chip microcomputer U15 (adopting the 89C52 chip), keyboard display controller U14 (adopting 7279 chips), first memory U16 (adopting the 24C02 chip), the first signal of communication converter U17; Its annexation be the first single-chip microcomputer U15 by data line P00～P03 respectively with the sheet choosing of first memory U16, clock, input, output line (is CS, CLK, DI, DO) connect, by I/O port P12～15 respectively with the video data line (DATA) of keyboard display controller U14, keyboard data line (KEY), sheet choosing (CS), clock (CLK) connects, data by serial port send again, receive line (RXD, TXD) and I/O port P10 link to each other with the first signal of communication converter U17, the first signal of communication converter U17 is connected to outside 485 buses by the RJ11 connection terminal on the wiring board, and outside 485 buses are to the second communication device U3 of repeater 2; Keyboard display controller U14 links to each other with display 141 by video data line (DATA), and links to each other with keyboard 131 by keyboard data line (KEY); The first signal of communication converter U17 is used for converting logic level signal to the RS-485 signal of communication, and clock circuit is made up of capacitor C 1, C2 and quartz oscillator X1;
Shown in Fig. 4～11,14, described mark input device comprises upper shell 11, lower house 12, keyboard liner plate 13, display board 14 and control circuit, wherein lower house 12 is the rectangular case structure that an end is tilted to, the angle of its sloping portion and base is 135 °, its base portion side is provided with power switch 18, its base portion bottom is provided with four heelpieces 16, its sloping portion back side is provided with the slot 15 that is connected by line with repeater 2, and slot 15 is provided with out, goes into bus contact 151,152 and attaching plug 153; Upper shell 11 shapes match with lower house 12, be flush-mounted in lower house 12, be provided with the circuit board that the dress control circuit is used between the upper and lower casing 11,12, keyboard liner plate 13, display board 14 are plugged in respectively on the bearing 121 of base, sloping portion of lower house (12), keyboard liner plate 13 is provided with keyboard 131, display board 14 is provided with display 141, and keyboard 131 is connected with the keyboard display controller U14 of control circuit by winding displacement with display 141; Upper shell 11 is set in keyboard 131 and display 141 by the square hole of its level and the display window of sloping portion, and display 141 adopts eight LED charactrons, and its upper surface is equipped with transparency protected 17.
As shown in figure 13, keyboard 131 adopts modular keypad, which is provided with 18 function keys, be specially: the 1, the 2,3,4,5,6,7,8,9, the 0th, data entry key, be provided with in addition withdraw from, on turn over, turn over down, typing, transmission, modification key, Enter is an acknowledgement key, and ". " is decimal key, and described 18 function keys are connected with the keyboard data line of keyboard display controller U14 respectively;
As shown in figure 15, repeater comprises second singlechip U0 (adopting the 89C52 chip), the first～two communicator U2, U3 (adopting 75176 chips), the second～four storer U4, U5, U6 (adopting 628128 chips), the first～eight light emitting diode U71～U78, the one or two serial o controller U8, U9 (adopting the 74ALS164 chip), the first code translator U12 (adopting the 74LS138 chip), the first data latches U13 (adopting the 74LS373 chip); Data transmission line, Data Receiving line TXD, RXD and I/O port P13, P14, T1 that its annexation is second singlechip U0 by serial port are connected to the first～two communicator U2, U3 through the first～four analog switch U11A, U11B, U11C, U11D; Also through data line A0～A7 of the first data latches U13 to the second～four storer U4, U5, U6, its address wire P20～P27, P17 and read-write control end RD, WR directly are connected with the second～four storer U4, U5, U6 address wire A8～A16 and reading writing signal line OE, WE respectively data line P00～P07 of second singlechip U0; Second singlechip U0 is connected with first and second serial o controller U8, U9 respectively by control line P12, P15, P16, and be connected with the first code translator U12 by control line P10, P11, establish the first～eight light emitting diode U71～U78 on first and second serial o controller U8, the U9, to loudspeaker, first its output terminal of code translator U12 is received sheet choosing (CS) end of the second～four storer U4, U5, U6 to the output terminal of the second serial o controller U9 through the first transistor T3; The described first communicator U2 is connected with the third communication device U30 of controller 3 by 485 buses; The duty of the first～eight light emitting diode indication repeater offers repeater and the mark input device+12V direct supply that is attached thereto by Switching Power Supply;
As shown in figure 16, controller comprises second communication signal converter U1 (adopting the MAX232 chip), the 3rd single-chip microcomputer U20 (adopting the 89C52 chip), the second data latches U21 (adopting the 74LS373 chip), the five～seven storer U22, U23, U24 (adopting 628128 chips), the 9th～16 light emitting diode U2611～U268, the three～four serial o controller U27, U28 (adopting the 74ALS164 chip), the second code translator U29 (adopting the 74LS138 chip), third communication device U30 (adopting 75176 chips); Data transmission line, Data Receiving line TXD, RXD and I/O port P13, P14, T1 that its annexation is the 3rd single-chip microcomputer U20 by serial port are connected to third communication device U30 and second communication signal converter U1 through the five～eight analog switch U25E, U25F, U25G, U25H; Data line P00～P07 of the 3rd single-chip microcomputer U20 is through data line A0～A7 of the second data latches U21 to the, five～seven storer U22, U23, U24, and its address wire P20～P27, P17 and read-write control end RD, WR directly are connected with the five～seven storer U22, U23, U24 address wire A8～A16 and reading writing signal line OE, WE respectively; The 3rd single-chip microcomputer U20 is connected with third and fourth serial o controller U27, U28 respectively by control line P12, P15, P16, and be connected with the second code translator U29 by control line P10, P11, establish the 9th～16 light emitting diode U261～U268 on third and fourth serial o controller U27, the U28, to loudspeaker, second its output terminal of code translator U29 is received sheet choosing (CS) end of the five～seven storer U22, U23, U24 to the output terminal of the 4th serial o controller U28 through transistor seconds T4; Second communication signal converter U1 on the controller 3 is connected on 232 interfaces of computing machine, and the duty of the 9th～16 light emitting diode indicating control offers controller+12V direct supply by Switching Power Supply.
Its course of work is:
Declare when volume when declaring the volume people, adopt keyboard 131 that data-signal is sent into keyboard display controller U14 in the mark input device, keyboard display controller U14 is transported to the display 141 and the first single-chip microcomputer U15 with data-signal, with data presentation to the LED charactron, and receive the instruction of the first single-chip microcomputer U15, the first single-chip microcomputer U15 can deposit among the first memory U16 after receiving the data-signal that keyboard display controller U14 transmits, and the data of calling among the first memory U16 pass to signal of communication converter U17, connect outside 485 buses by the RJ11 connection terminal on the wiring board; When repeater 2 passes through 485 bus access mark input devices 1, data are sent in the repeater 2 by the first～two communicator, second communication signal converter U1 through controller 3 is sent in 232 interfaces of computing machine again, generate database file, carry out data processing by SQLserver software.
The utility model external power source adopts AC220V.
In addition, first, second and third communicator of the utility model also can adopt 1487E or 485 chips, and first and second signal of communication converter also can adopt 75176 or the 1487E chip; Described mark input device 1 can be 1～32 group, and every group is 1～31; The also available CAN bus of described 485 buses replaces; Described display 141 also can adopt LCD.
Claims (10)
1. exam score input device, it is characterized in that: comprise that polycomponent counts input device (1), for every number of components input device (1) through the general structure of a repeater (2) to controller (3), wherein every number of components input device (1) structure is identical, mark input device (1) is that input signal is connected with the second communication device (U3) of repeater (2) by data bus through the first signal of communication converter (U17) with keyboard (131), first communicator (U2) of repeater (2), be connected with the third communication device (U30) of controller (3) by data bus, controller (3) links to each other with computer 232 interface by second communication signal converter (U1).
2. according to the described exam score input device of claim 1, it is characterized in that: described mark input device (1) is 1～32 group, and every group is 1～31.
3. according to the described exam score input device of claim 1, it is characterized in that: described mark input device (1) comprises upper shell (11), lower house (12), keyboard liner plate (13), display board (14) and control circuit, wherein lower house (12) is the rectangular case structure that an end is tilted to, its sloping portion back side is provided with the slot (15) that is connected with repeater (2) line, upper shell (11) shape matches with lower house (12), be flush-mounted in lower house (12), on, lower house (11,12) be provided with the circuit board that the dress control circuit is used between, keyboard liner plate (13), display board (14) is plugged in the base of lower house (12) respectively, on the bearing of sloping portion (121), keyboard liner plate (13) is provided with keyboard (131), display board (14) is provided with display (141), and keyboard (131) is connected with the keyboard display controller (U14) of control circuit by winding displacement with display (141); Upper shell (11) by its level square hole and the display window set keyboard (131) of sloping portion and display (141) in it.
4. according to the described exam score input device of claim 3, it is characterized in that: the angle of described lower house (12) sloping portion and base is 90～180 °.
5. according to the described exam score input device of claim 3, it is characterized in that: slot (15) is provided with out, goes into bus contact (151,152) and attaching plug (153).
6. according to the described exam score input device of claim 3, it is characterized in that: the control circuit of described mark input device (1) comprises keyboard display controller (U14), first single-chip microcomputer (U15), first memory (U16), the first signal of communication converter (U17); Its annexation is that first single-chip microcomputer (U15) is connected with first memory (U16) by data line, be connected with keyboard display controller (U14) by the I/O port, data transmission line, Data Receiving line and the I/O port by serial port links to each other with the first signal of communication converter (U17) again; The described first signal of communication converter (U17) is by the second communication device (U3) of external bus to repeater (2); Keyboard display controller (U14) links to each other with display (141) by the video data line, and links to each other with keyboard (131) by the keyboard data line.
7. according to claim 3 or 6 described exam score input devices, it is characterized in that: described display (141) is nixie display or LCD, and wherein nixie display adopts eight LED charactrons.
8. according to claim 3 or 6 described exam score input devices, it is characterized in that: described keyboard (131) is provided with 18 function keys, be specially: the 1, the 2,3,4,5,6,7,8,9, the 0th, data entry key, be provided with in addition withdraw from, on turn over, turn over down, typing, transmission, modification key, Enter is an acknowledgement key, ". " is decimal key, and described 18 function keys are connected with the keyboard data line of keyboard display controller (U14) respectively.
9. according to the described exam score input device of claim 1, it is characterized in that: described repeater comprises second singlechip (U0), the first～two communicator (U2, U3), the second～four storer (U4, U5, U6), the first～two serial o controller (U8, U9), first code translator (U12), first data latches (U13); Data transmission line, Data Receiving line and I/O port that its annexation is a second singlechip (U0) by serial port are connected to the first～two communicator (U2, U3) through the first～four analog switch (U11A, U11B, U11C, U11D); The data-signal of second singlechip (U0) also through first data latches (U13) to the second～four storer (U4, U5, U6), its address wire and read-write control end directly are connected with the second～four storer (U4, U5, U6) respectively; Second singlechip (U0) is connected with first and second serial o controller (U8, U9) and first code translator (U12) respectively by control line, and its output terminal of first code translator (U12) is received the sheet choosing end of the second～four storer (U4, U5, U6); Described first communicator (U2) is connected with the third communication device (U30) of controller (3) by data bus.
10. according to the described exam score input device of claim 1, it is characterized in that: described controller comprises second communication signal converter (U1), the 3rd single-chip microcomputer (U20), second data latches (U21), the five～seven storer (U22, U23, U24), the three～four serial o controller (U27, U28), third communication device (U30), second code translator (U29); Data transmission line, Data Receiving line and I/O port that its annexation is the 3rd single-chip microcomputer (U20) by serial port are connected to third communication device (U30) and second communication signal converter (U1) through the five～eight analog switch (U25E, U25F, U25G, U25H); To the five～seven storer (U22, U23, U24), its address wire and read-write control end directly are connected with the five～seven storer (U22, U23, U24) respectively the data-signal of the 3rd single-chip microcomputer (U20) through second data latches (U21); The 3rd single-chip microcomputer (U20) is connected with third and fourth serial o controller (U27, U28) and second code translator (U29) respectively by control line, and its output terminal of second code translator (U29) is received the sheet choosing end of the five～seven storer (U22, U23, U24); Described second communication signal converter (U1) is connected on 232 interfaces of computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251556 CN2509643Y (en) | 2001-11-21 | 2001-11-21 | Examination mark inputting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251556 CN2509643Y (en) | 2001-11-21 | 2001-11-21 | Examination mark inputting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2509643Y true CN2509643Y (en) | 2002-09-04 |
Family
ID=33661451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01251556 Expired - Lifetime CN2509643Y (en) | 2001-11-21 | 2001-11-21 | Examination mark inputting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2509643Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794195A (en) * | 2010-03-16 | 2010-08-04 | 北京商纳科技有限公司 | Method and system for recording test scores |
| CN102147837A (en) * | 2011-02-28 | 2011-08-10 | 北京商纳科技有限公司 | Calculator and method and device for counting test scores |
-
2001
- 2001-11-21 CN CN 01251556 patent/CN2509643Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794195A (en) * | 2010-03-16 | 2010-08-04 | 北京商纳科技有限公司 | Method and system for recording test scores |
| CN102147837A (en) * | 2011-02-28 | 2011-08-10 | 北京商纳科技有限公司 | Calculator and method and device for counting test scores |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1489070A (en) | Bill receiver | |
| CN200969098Y (en) | Hand-hold two-dimensional bar code reader | |
| CN1821987A (en) | Intelligent card reading and writing method based on USB interface and its reading and writing device | |
| CN2509643Y (en) | Examination mark inputting device | |
| CN1177288C (en) | Method and system for converting content format of file archives | |
| CN101042816A (en) | Interactive switching system and processing method based on SDL graphics relationship | |
| CN1511295A (en) | Estimation evaluation system | |
| CN1282893C (en) | Signal transmission unit for liquid crystal display | |
| CN200969112Y (en) | Newspaper and magazine delivery distributing system | |
| CN218413494U (en) | Support is stacked to intelligence of PC component | |
| CN1166007A (en) | Distributing sickroom computerized infusion monitoring system | |
| CN1945235A (en) | Single ring coded directly reading type radio remote transmitting water meter | |
| CN1588473A (en) | Depth indicator for mine hoist | |
| CN2236671Y (en) | Pen-like bar code scanner | |
| CN2919383Y (en) | Intelligent card type elevator charging device | |
| CN2502340Y (en) | Electric power carrier integral meter-recording system | |
| CN2630743Y (en) | Controller with liquid crystal screen for boiler | |
| CN2682959Y (en) | Intelligent letter and newspaper box | |
| CN1248695A (en) | Intelligent water, electricity, gas three-meter telephone network long distance centralized reading-out system | |
| CN2168287Y (en) | Electronic abacus | |
| CN2266238Y (en) | Unattended wireless paging microcomputer coder | |
| CN2484610Y (en) | Wine-less anti-fake inquiry terminal apparatus | |
| CN2690988Y (en) | ICP/IP charging machine | |
| CN2626150Y (en) | Intelligent hydrographic information transmission machine | |
| CN2263371Y (en) | Electronic watch for watchman use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111121 Granted publication date: 20020904 |