ttl circuit 中文意思是什麼
ttl circuit
解釋
晶體管晶體管邏輯電路-
Detail specification for type jt54ls85 ls - ttl 4bit magnitude comparator of semiconductor integrated circuit
半導體集成電路jt54ls85型ls - ttl四位數值比較器詳細規范 -
In experiment process, aim at the current rotary encoders output is not ttl wave type, the writer designs the hardware integrated circuit by that can turn the current wave into ttl wave, and it obtains the good result. finally the thesis creates the pcb card of the chip module, and makes use of the hp signal occurrence apparatus 33120a finishing the on - line data collection, give out and analysis the experiment result
在實驗過程中，針對現有圓光柵編碼器輸出波形為正弦波，設計了正弦波轉為方波的硬體集成電路，取得了很好的效果；製作了下位單片機系統的pcb板；最後利用hp33120a信號發生器，對其發出的信號進行實時採集，給出了實驗結果並加以分析。 -
Alarm input signals are : contact open - circuit alarm, contact closed - circuit alarm, ttl level signals. alarm output modes are : flash alarm, sound alarm, relay contact output alarm optional for memory function or not it adopts high brightness led or long - lifetime planar luminotron separate indicate the current condition for every loop
各輸入埠均具備萬能信號和單通道輸入功能，且各路可同時輸入不同類型的信號，輸入信號全切換時只需通過儀表菜單的簡單選定，即可實現不同類型輸入信號各種熱電偶熱電阻標準電壓標準電流信號之間的輕松切換，提高了儀表的通用性和可靠性。 -
Because the signal which serial interface output of mcu is ttl logic level, it is essential to transform ttl electrical level to rs - 232 electrical level when the mcu is communicated with pc. in this paper the universal rs232 / 485 electrical level converting circuit board is designed. it can realize data transmission by the two communication level manner
因為單片機的串列輸出介面輸出的電信號是ttl電平，這樣在和上位機通信時需要通過轉換電路對其電平進行轉換，所以在本課題中設計了通用的rs - 232 485電平轉換電路板，可以實現兩種不同電平的數據傳輸，通過最後的實驗驗證，該電路板能實現所要求的功能，傳輸信號可靠準確。 -
The output circuit of feedback control signal by using a high resolution 16 bit digital to analog converters ( 16 bit dac ) which is kennel of chip dac703j, the data communication interface between microcomputer and computer by using the circuit of the ttl and rs - 232 voltage transform with the chip max232, are also designed
採用了dac703j晶元為主的高解析度16位d a轉換電路，設計了反饋控制信號輸出電路，採用max3232晶元為主的ttl電平與rs - 232電平轉換電路，設計了單片機與上級計算機數據通訊介面。
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