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PS/2 interface detection apparatus and method

一种检测装置、检测方法的技术，应用在错误检测/纠正、数字电路测试、电子电路测试等方向，能够解决影响工作效率、键盘空间利用率低等问题，达到提高效率、提高空间利用率、节省人力成本的效果

Inactive Publication Date: 2006-12-27
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] 3. not used, reserved
[0010] 6. Not used, reserved
[0018] With the gradual expansion of the computer market, the market demand for keyboards is increasing day by day. Therefore, in the development, design and production of computers, a large number of detection devices with PS / 2 interface on the motherboard are needed. The keyboard and mouse are used for function testing, but the space utilization rate of the keyboard is low, and the speed of the manual key test directly affects the work efficiency. If a device is used to replace the keyboard, and the corresponding command is used to simulate the manual key, it can make up for this deficiency

Method used

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  • PS/2 interface detection apparatus and method
  • PS/2 interface detection apparatus and method
  • PS/2 interface detection apparatus and method

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0036] refer to figure 1 , the detection device of a PS / 2 interface comprises a single-chip microprocessor 10,-PS / 2 interface terminal 20 and three LED indicator lamps D1, D2 and D3, the I / O port P0 of the single-chip microprocessor 10. 0 and P0.1 are respectively connected to the data port 1 and clock port 5 of the PS / 2 interface, P0.0 and P0.1 are connected to the power supply through a pull-up resistor R1 and R2, and three LED indicators D1, D2, D3 is connected to the power supply through the voltage dividing resistors R3, R4, and R5 in the forward direction, and connected to the I / O ports P0.2, P0.3, and P0.4 of the single-chip microprocessor 10 in the reverse direction. 2 interface communicates with the single-chip microprocessor; the three LED indicators respectively simulate the Num Lock, Caps Lock and Scroll Lock in the common...

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Abstract

The invention relates to a checking device of PS / 2 interface and relative method, wherein said checking device comprises one single-chip micro processor, one PS / 2 interface terminal and several LED instruct lamps; the single-chip micro processor is connected to the data end and clock end of PS / 2 interface; said LED instruct lamp is connected to the micro processor, to simulate the function of keyboard instruct lamp; and said checking method comprises: using the instruction preset at micro processor to simulate hand-operated key to send second keyboard scan code, and use keyboard controller to translate it into first scan code; then judging if they are relative. The invention can replace hand-operated key press operation to save cost and time.

Description

【Technical field】 [0001] The present invention relates to a device and method for PS / 2 (Personal System / 2, second generation personal system) interface detection in test engineering, especially a device and method for detecting the basic functions of PS / 2 interface by using instructions to simulate manual keys . 【Background technique】 [0002] Along with the development of computer industry, the keyboard as the most commonly used input device of computer is also changing with each passing day. In 1981, IBM introduced the PC / XT keyboard and its interface standard. The standard defines 83 keys, uses 5-pin DIN connectors and a simple serial protocol, but the first set of keyboard scan codes has no computer-to-keyboard commands. To this end, in 1984, IBM introduced the AT keyboard interface standard. The standard defines 84-101 keys, adopts 5-pin DIN connector and two-way serial communication protocol, and the protocol has 8 commands from the host to the keyboard according to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/267
CPCG01R31/319
Inventor 游永兴何凤龙罗延峰刘钱生
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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