4017 circuits

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Basic knowledge of current absorption, current pulling, current filling, pull-up resistance, drop-down resistance, and high-Resistance Mode

operating current of the light-emitting diode is 5 ~ 10mA ). Up/down resistance I. Definition 1. Pulling up is to embed uncertain signals in a high level through a resistor! "Resistance simultaneously throttling "! The same is true for the drop-down! 2. the pull-up operation injects current into the device, and the drop-down operation is the output current. 3. the weak ones only have different resistance values for the pull-up resistor. There is no strict distinction between them. 4. The abilit

Programmable simulation IC [zz]

How to use registers for Analog Circuits and programmable parameters. Address: http://www.hqew.com/tech/sheji/410361.html Programmable SimulationICConsiderations Analog Circuit Design and processor, FPGA andPLDIn terms of architecture, there is a fundamental difference. The signal processing function of the analog circuit remains unchanged as long as you have set the topological layout and parameters of the circuit. Of course, some exis

Mbist: testable Design technology for Embedded Memory

The mbist technology can automatically implement RTL-level built-in self-testing circuits for memory units or arrays. The mbist EDA tool supports automatic implementation of multiple testing algorithms, you can automatically create BIST logic for one or more embedded memories and connect the BIST logic to the memory. In addition, the mbist structure can also include the automatic fault diagnosis function, this facilitates Fault Locating and the develo

Signal Processing Circuit for ZZ Infrared Focal Plane Array

Abstract:The development of the signal processing circuit of the infrared focal plane array is introduced. The basic structure, working mode and application fields of CCD Multi-Channel transmitter (CCD-MUX), time delay integrated CCD (TDI-CCD), MOS and CMOS multi-channel transmitter (CMOS-MUX) are described. Finally, two application circuits of multichannel transmission devices are provided. Keywords:Signal processing circuit of infrared focal plane a

Linux Basics Exercises

/BASHER:/BIN/BASHTESTBASH:X:4010:4010::/HOME/TESTBASH:/BIN/BASHNOLOGIN:X:4011:4011::/HOME/NOLOGIN:/SBIN/NOLOGINUSER5:X:4012:4012::/HOME/USER5:/BIN/BASHUSER6:X:4013:4013::/HOME/USER6:/BIN/BASHUSER7:X:4014:4014::/HOME/USER7:/BIN/BASHHADOOP:X:4015:4015::/HOME/HADOOP:/BIN/BASHFEDORA:X:4016:4016::/HOME/FEDORA:/BIN/BASHCENTOS:X:4017:4017::/HOME/CENTOS:/BIN/BASH5. Remove the IP address of the current host and tip:

Information security system Design Fundamentals Fifth Week study summary------20135334 Zhao Yanglin

. details of some Y86 directivesSpecifically POPL and PUSHL, there are two different conventions when pressing/ejecting the stack pointer%esp:1.压入/弹出%esp的原始值2.压入/弹出%esp-/+4后的值After testing, it is found that the default press-in pops up the original values . PUSHL There is ambiguity between the different x86 models, but POPL does not. Section II Logic Design and hardware control Language HCLIn electronic circuits, the logic 1 is represent

What is a magnetic beads (Ferrite Bead is FB ))

. However, the noise suppression capability increased at high frequencies cannot be as expected, however, it would be better to concatenate several magnetic beads.Ferrite is a magnetic material that produces magnetic saturation due to excessive current, resulting in a sharp reduction in the magnetic conductivity. Large Current filtering should adopt specially designed magnetic beads, and pay attention to the heat dissipation measures.Ferrite Magnetic Beads can be used not only in power supply ci

Simulated and digitally detailed

solve the problem, but certainly will be wrong (1th was shot off). The 2nd way to install 2 elevators, a dedicated 2 floor, another dedicated to the 3 floor, wonderful! Too witty, so the 2-storey staff will not affect each other. Got it?The digital, simulated ground will affect each other not because of a called number, one is called simulation, but they used the same elevator: ground, and this elevator is used by the well is we on the PCB cloth ground. Analog circuit of the current go this lin

What are TTL and CMOS levels and their differences?

What is TTL level? TTL-level signals are used most often because they are represented in binary format. + 5 V is equivalent to logic "1" and 0 V is equivalent to logic "0 ", this is called a TTL (transistor-Transistor Logic level) Signal System, which is a standard technology for communication between various components of a device controlled by a computer processor.TTL-level signals are ideal for data transmission within devices controlled by a computer processor. First, data transmission withi

[Switch] Is FPGA's "programmable" confusing to you?

word "programmable" is confusing. That is to say, the essence of FPGA is not clear. Therefore, there is no way to learn FPGA. It is a waste of time, but it still fails to achieve the effect.FPGA is a semi-customized circuit in the field of dedicated Integrated Circuits (ASIC). It not only solves the shortcomings of the custom circuit, but also overcomes the shortcomings of the limited number of door circuits

Principle and Application of Photoelectric Coupler

linear photocoupler is no different from that of ordinary photocoupler. It only slightly changes the single-node single-circuit mode of the ordinary photocoupler and adds an optical receiving circuit for feedback. In this way, although both optical receiving circuits are non-linear, the non-linear characteristics of the two optical receiving circuits are the same. The non-linearity of the feedback channel

Exploring the ground in the circuit -- Overcoming electromagnetic interference

On printed circuit boards, power cords and ground wires are the most important. The main method to overcome electromagnetic interference is grounding. For the dual panel, the ground line layout is particularly exquisite. By using the single point grounding method, the power supply and ground are connected from both ends of the power supply to the printed circuit board. The power supply is one point, one point. On the printed circuit board, there must be multiple return ground wires, which will b

What is TTL level and CMOS level?

(This document is reproduced by myself. The source is ...... Forgot .) What is TTL level? TTL-level signals are used most often because they are represented in binary format. + 5 V is equivalent to logic "1" and 0 V is equivalent to logic "0 ", this is called a TTL (transistor-Transistor Logic level) Signal System, which is a standard technology for communication between various components of a device controlled by a computer processor.TTL-level signals are ideal for data transmission within dev

Model learning experience

objects are amplification circuits, and the amplification is both AC signals and Weak AC signals. As we all know, the work of the transistor requires certain bias conditions, and the AC signal is small and negative, so we cannot directly enlarge the AC signal. Here we use the following method: a dc offset is provided for the tube to work in the amplification area, and an AC signal is superimposed on the DC (that is, the voltage fluctuates, but it doe

Multilayer PCB layout

can be used to transmit high-speedSignal. The two inner electrical layers can effectively shield external interference on the siganl_2 (inner_2) layer and.In all aspects, solution 3 is obviously the most optimal one. At the same time, solution 3 is also a commonly used stack structure of 6 layers.Through the analysis of the above two examples, I believe that the reader has a certain understanding of the stacked structure, but sometimes, a certain SolutionAll requirements cannot be met, so the p

Difference and connection between magnetic beads and inductor

wires pass through. However, the noise suppression capability increased at high frequencies cannot be as expected, however, it would be better to concatenate several magnetic beads. Ferrite is a magnetic material that produces magnetic saturation due to excessive current, resulting in a sharp reduction in the magnetic conductivity. Large Current filtering should adopt specially designed magnetic beads, and pay attention to the heat dissipation measures. Ferrite Magnetic Beads can be used not on

Self-developed computer-the essence of Computer Science

What is a computer? Is computer science very advanced? You may think of integrated circuits, assembly languages, operating systems, and so on. However, a real computer is essentially very simple, and you can do it yourself, the so-called integrated circuit is only one way to implement a computer. It can make the computer faster and smaller. It belongs to another category. As for programming languages, it is another category, if you understand the natu

-- Journal and magazine --

1. Category 1 academic publications: IEEE Transactions on Communications IEEE Transactions on Information Theory IEEE Transactions on Wireless Communications IEEE Transactions on Circuits and Systems IEEE Transactions on Signal Processing IEEE Transactions on Vehicular Technology IEEE/ACM Transactions on Networking European Transactions on Telecommunications European Transactions on Telecommunications and Related Technologies IEEE Transactions on Mobi

Circuit diagram of wideband ALC amplifier with TL026 and other components

resistor value, as is necessary with the previous design of differential amplifier. The so-called instrumentationbuilds on the last version of differential amplifier to give us that capability:This intimidating circuit are constructed from a buffered differential amplifier stage with three new resistors linking the Both buffer circuits together.Consider all resistors to is of equal value except for Rgain.The negative feedback of the upper-left op-amp

Selection of circuit design magnetic beads on PCB

ring and the magnetic beads should be used. Their resistance to the high-frequency components in the line is about 10 to several hundred Ω, so it does not play an obvious role in the high-impedance circuit, it will be very effective in Low-Impedance Circuits (such as power distribution, power supply, or RF circuits. Iv. ConclusionFerrite is widely used in EMI control because it can degrade at a high frequ

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