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How do you connect 555 timer 74192 7447 SSD to have a 0 9 countdown timer?
Wiki User
∙ 11y ago
you must be dirrectly cnnect to 74ls192
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∙ 11y ago
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How does ic 7447 works?
can i use ic 7476 as time delay
How can you use 7447 to drive a common-cathode display?
When using a common cathode 7-segment display with a 7447 the readout is inverted. Instead of 1000 resulting in an 8, you will see all segments will be off. Since a common cathode display pulls its power from the driving IC chip you could either use an inverter on each input segment or use each 7447 output to forward bias a transistor (turn it on) allowing current draw to come directly from Vcc instead of risking burning out your chip. Note: the series limiting resistors will still be necessary.
Features of IC 7447?
The 4017 IC is a decade (divide by ten) counter with decoded outputs. Internally, there is a 4 bit counter, with feedback to reset at 10 instead of 16, followed with a ten output decoder that makes each state available on a separate pin of the IC.Another answerOne of my favorite IC's, the 4017 decade counter/divider.The 4017 takes a clock pulse in and then steps the output from negative to positive in a series of ten steps, with only one pin being on at a time. It has the unique capability of counting up to a certain number and then restarting the count, counting up to a certain number and halting, or it can be cascaded to more 4017's for a higher count.The outputs are labeled 0 through 9. It can sink about 10 ma. of current per pin and is a very versitile IC. It operates from 3 VDC. to 15 VDC.Do a Google search and in parenthesis type in "LM4017". You'll be rewarded with all kinds of technical info which you can download and print.
What is the difference between the nand gate ic's 74ls00 and 74ls132?
The 74LS00 is a logic NAND gate with normal logic level inputs. This means that the inputs has a low range below 0.8V, unrecognised range and a high range above 2V. At any time a input signal crosses those levels, a change in state can be expected. Applicable to the LS family, they have a floating input that means it is uncertain the state of logic level if no input is connected. Therefore never assume that since the input is not connected that the circuit will assume a zero, it can be either zero or one. The 74LS132 is also a NAND gate logic function. But different to the Logic level input it uses what we call a Schmitt trigger input to improve noise immunity in a circuit. In simple terms; it's really nothing more than a comparator input. But the Schmitt trigger also have a hysteresis, which help to eliminate the affect what noise have on the circuit. On a more technical note Each circuit contains a 2-input Schmitt trigger followed by a Darlington level shifter and a phase splitter driving a TTL totem pole output. The totem pole is basically a push-pull output stage constructed with two p-n-p transistors and a diode on the output. The comparator function would mean that there is a particular threshold level on the input and if the input voltage pass the particular level, the output or intermediate state of the function will change state. In the case of multiple logic inputs the change of input state does not necessarily mean a change in output state and therefore I will refer to an intermediate area inside the function related to the input state. The hysteresis create a high and low trigger points. This cause the input to at least pass the high trigger point of about 1.6V before the intermediate state will change or drop below the 0.9V before the intermediate state change back again. Therefore the practical unit will not have one particular level to change state but these two fixed trigger points must be used. It sounds like it complicates matters but it really helps to handle input noise signals which makes the Schmitt trigger a handy device. Making it a good device for signal conditioning of logic signals in some applications. Also take note that the high and low hysteresis trigger points may vary with supply voltage. In fact I do not recommend it as standard practice to use a Schmitt trigger to evaluate analogue levels, some engineers may differ but I would rather refer to a real comparator circuit design where you have more control over precision, trigger points and reference levels. But may be considered for logic inputs from sensors or conditioning of logic signals Some circuits may also employ Schmitt trigger devices for oscillators and contact debouncing
How to connect 74ls138 with 7 segment?
We cannot connect the 74ls138 straight with a seven segment display; for that we need a 7447(7 segment driver).
What is 7447 to the nearest 100?
7400
What is the sum of 7447 and 1027?
8474
What is the sum of 7447 and1027?
The sum of 7,447 and 1,027 is 8,474.
How does ic 7447 works?
can i use ic 7476 as time delay
What is the phone number of the Bremerton Naval Museum in Bremerton Washington?
The phone number of the Bremerton Naval Museum is: 360-479-7447.
What is the phone number of the Kalmar Nyckel Foundation in Wilmington Delaware?
The phone number of the Kalmar Nyckel Foundation is: 302-429-7447.
What is the phone number of the Glendale Historical Society in Glendale California?
The phone number of the Glendale Historical Society is: 818-242-7447.
Where is the Eastvale Community Library in Corona located?
The address of the Eastvale Community Library is: 7447 Cleveland Ave, Corona, 92880 9750
How can you use 7447 to drive a common-cathode display?
When using a common cathode 7-segment display with a 7447 the readout is inverted. Instead of 1000 resulting in an 8, you will see all segments will be off. Since a common cathode display pulls its power from the driving IC chip you could either use an inverter on each input segment or use each 7447 output to forward bias a transistor (turn it on) allowing current draw to come directly from Vcc instead of risking burning out your chip. Note: the series limiting resistors will still be necessary.
What is the phone number of the Andrew Bayne Mem Library in Bellevue?
The phone number of the Andrew Bayne Mem Library is: 412-766-7447.
Where is National Tire Wholesale located?
The National Tire Wholesale is located at 7447 River Road, Delta, BC V4G 1B9, Canada. A great place to go for new tires or retreads for any car or light truck.
