Integrated Component Production Physics Doctor Please enter!!

I'm not a Ph.D. in physics, but I can also attend your ......

Integrated circuits have a history of many years, and the function of circuits made by other transistors is the same, but the volume is reduced a lot.

General integrated circuits are composed of resistor-capacitance sensing components, diodes, transistors, field effect transistors and other transistors, the size of each component or device on it is hundreds of microns, an integrated circuit the size of a grain of rice, how many components or devices do you need to assemble? You need a circuit that can say a word, for example, a sentence is 5 seconds long, do you know how many fusible wires you need? You're going to make an 800*800 grid to store this sentence, can you do it?

Now a computer is less than half a square meter, and the computer that just came out at the beginning occupies an area of several hundred square meters.

Take a good look at the book, first know what an integrated circuit is, and then talk about what to do......

If you want to assemble an integrated circuit, it is likely to be very large, and the stability of the electronic components may not meet the requirements. You'd better give up on this idea. If you are interested, you can start by doing a few very simple basic circuits such as:"555"Wait and try it.

Don't fantasize about it, the first computer ENIAC was made by hard soldering connecting elements, and I have the impression that 18,000 vacuum tubes, 70,000 resistors, thousands of switches, and capacitors I forgot how much, and I had to be tired to death. And it functions very poorly, and the circuit that speaks is probably even harder.

The principle of integrated components is composed of diodes, transistors, resistors, capacitors and other electronic components, which are integrated on a packaged chip and have special functions.

That is to say, you can use a series of various electronic components to form some circuits that achieve certain functions, similar to some integrated components, of course, the volume and power consumption will be large, even if you have a very simple integrated device. And it's not called an integrated device, you don't have all the components on one chip.

If you're going to assemble a talking circuit, it's not very realistic to do it with just a few discrete devices. Also requires a high level of expertise, and you can search the web for some sound circuits that are already very well established. He will have specific data and devices, and generally you need to go to a specialized PCB board factory to customize the circuit board.

The sound board should not be expensive, 30-40 yuan, of course, you need to provide a PCB board drawing.

IC is the English abbreviation of Integrate Circuut, which means integrated circuit.

Generally, in the circuit, you see black, into a flat cuboid, and the pins above 6 pins are integrated components, and the one you said should be, mainly for computing functions, in fact, quite the CPU.

All are grounded or all connected to the power supply, so that it has a fixed value, otherwise it is easy to be disturbed.

In the physics of the control variable method, the method of controlling factors (variables) is often used to control the problem of multiple factors (variables), turning the problem of multiple factors into a problem of multiple single factors. Only one of the factors is changed at a time, and the remaining factors are controlled unchanged, so as to study the influence of the changed factor on things, study them separately, and finally solve them comprehensively, this method is called the control variable method. It is an important method of thought in science, and is widely used in various scientific explorations and scientific experiments.

1 Independent variables, i.e., a change in one quantity does not cause a change in a quantity other than the dependent variable. Only when a physical quantity is expressed by an independent variable is the functional relationship given by it is correct. 2 Non-independent variables, a change in one quantity will cause a change in a quantity other than the dependent variable.

Treating non-independent variables as independent variables is a taboo in determining the relationship between physical quantities. Correctly determining whether the physical quantities in a physical expression are constants or variables, independent variables or non-independent variables, is not only the premise and guarantee for correctly answering the relevant questions, but also simplifies the solution process.

Control variable method, that is, when the effect of pressure is related to pressure, the force area should be controlled. When the effect of the pressure is related to the force area, the pressure should be controlled.

It's impossible. This is because at least one DPDT switch is required to achieve such a function. In addition, when a battery is used to supply power to a light-emitting diode, it is generally necessary to use a resistor to "limit the current" to ensure safety and a relatively stable operating state when the voltage fluctuates.

After studying it for a while, it looks like this. It's a bit rudimentary.

LEDs can be connected in multiple parallels, which allows them to pass through large currents. The switch S disconnects the two power supplies in parallel (diode plus forward voltage on), and when closed, the two power supplies are connected in series (diode plus reverse voltage cut-off.

Blow molding paper is a thin plastic foam paper similar to styrofoam, and it comes in many colors, so you can buy it at stationery stores and art supply stores.

What is blow molded paper:

The raw materials of blow molding paper and KT board are expanded polystyrene, but the ingredients and production methods are different, and the performance is also different.

There are more fillers for blown paper, and after extrusion, they are first blown into a cylinder and then pressed into a sheet, so the surface is mercerized, and it is easy to cut into two layers, which is softer than KT board, and the strength is different in different directions.

KT board is basically not filled, much thicker than blow molding paper, and the strength is also higher, if the skin is peeled, the strength difference in different directions is very small.