摘要:
An antenna includes a substrate having a first layer, a second layer, a third layer and a fourth layer, and an antenna unit having a first pattern being of a helix-shaped and printed on the first layer, a second pattern being of a meandering shaped and printed on the second layer, a third pattern being of a meandering shaped and printed on a third layer, and a fourth pattern being of a helix-shaped and printed on the fourth layer. The first pattern, the second pattern, the third pattern and the fourth pattern are of a serial connection. The free end of the first pattern connects a feeding point. The free end of the fourth pattern connects a grounding point. Thus, the antenna has advantages of compact size and low cost, due to the antenna unit printed on the substrate and the pattern of the antenna unit.
摘要:
An antenna includes a substrate having a first layer, a second layer, a third layer and a fourth layer, and an antenna unit having a first pattern being of a substantially coiled shape and printed on the first layer, a second pattern being of a meandering shaped and printed on the second layer, a third pattern being of a meandering shaped and printed on a third layer, and a fourth pattern being of a substantially coiled shaped and printed on the fourth layer. The first pattern, the second pattern, the third pattern and the fourth pattern are of a serial connection. The free end of the first pattern connects a feeding point. The free end of the fourth pattern connects a grounding point. Thus, the antenna has advantages of compact size and low cost, due to the antenna unit printed on the substrate and the pattern of the antenna unit.
摘要:
A measurement data recording system includes a microprocessor, a first switch and a second switch. The first switch sends a trigger signal to trigger a digital measurement instrument sends a measurement data. The microprocessor detects the trigger signal aroused by the first switch, receives the measurement data, and records it into the memory card. The microprocessor also detects a trigger signal aroused by the second switch and deletes the measurement data in the memory card. A method for recording the measurement data includes steps of detecting the trigger signal, detecting a status of the memory card, detecting a status of a data file in the memory card, receiving the measurement data and recording it into the data file while the trigger signal being aroused by the first switch, and deleting the measurement data recorded in the data file while the trigger signal being aroused by the second switch.
摘要:
An electronic apparatus includes a display screen, a physical button, a touch pad separated from the display screen, and a processor. The touch pad is segmented into a first touch area, a second touch area and a third touch area. The processor judges an action of the physical button to select one of functions of the electronic apparatus and controls the display screen to show a selected function, the processor judges a track from the first touch area and through the second touch area and to the third touch area to operate the selected function and controls the display screen to show an operating result. Therefore, the operation method of the physical button and the touch pad is the same as a larger touch screen.
摘要:
An electronic apparatus includes a display screen, a physical button, a touch pad separated from the display screen, and a processor. The touch pad is segmented into a first touch area, a second touch area and a third touch area. The processor judges an action of the physical button to select one of functions of the electronic apparatus and controls the display screen to show a selected function, the processor judges a track from the first touch area and through the second touch area and to the third touch area to operate the selected function and controls the display screen to show an operating result. Therefore, the operation method of the physical button and the touch pad is the same as a larger touch screen.