How to find the frame buffer for the raster system, and how to identify the direction of the raster

I don't understand, just wait for the cow to answer!

The frame buffer is actually a small memory, which can store a small amount of "frame" images for processing, in the early days, because the memory was very expensive, the general buffer only stored 1 frame or several frames, and now many of them are calculated by the second.

I don't know what device you're talking about, but let's give a few examples.

1. There is a buffer for a few seconds in Sony's disc camera, which is used for shockproofing, if there is vibration when shooting, so that the bald head can not be written normally, the data will be stored in the buffer first, and then write to the disc after the bald head is normal (the disc writing speed is higher than the ** code stream), as long as the vibration duration does not exceed the storage time of the buffer, the data will not be lost.

2. Many broadcast cameras now offer a function that allows you to start recording from 5 seconds before the screen when you press the record button, which is provided by an internal 5-second buffer. When recording is not started, the captured image is continuously written to the buffer, and when it is full, the oldest image is automatically overwritten, and when recording is started, the buffer starts recording the recorded image 5 seconds ago to the tape.

There are two types: input buffer and output buffer.

The function of the former is to temporarily store the data sent by the peripherals so that the processor can take it away;

The latter is used to temporarily store the data sent by the processor to the peripherals.

With the buffer, the CPU working at high speed and the peripherals working at slow speed can be coordinated and buffered, and the synchronization of data transmission can be realized. Since the buffer is connected to the data bus, it must have a three-state output function.

Fetching data from memory, executing commands, etc., the cache is a higher level of existence than memory.

Solve the delay of instructions between CPU and memory!

To put it simply, the translucent and opaque light alternately dissipate or line up on a plane, which can be called a grating.

In the manufacture of bridges, a flat optical glass is generally taken, and a laser is used to carve out an equally spaced light blocking light on it.

A grating is a series of parallel light-transmitting slits on an opaque sheet: the finer the slit, the narrower the interference fringes.

Moving in the forward direction, the A believe sign is 90 degrees ahead of the B believe sign

Moving in reverse, the B believe sign is 90° ahead of the A believe sign

Lighting treatment (3D max method).

Add lights.

No. EDTA is added to many loading buffers, and the reaction will be terminated if the PCR system is added in advance.

No, bromophenol blue is in the loading buffer, which can stop the relevant enzymatic reactions, especially the restriction enzyme digestion reactions, and can only be added to the loading buffer in the spotting to observe the progress of electrophoresis.

There are two main functions of loading buffer. First, the progress of electrophoresis is displayed so that we can terminate the electrophoresis in due course; Second, increase the sample density so that the sample density is greater than that of TAE, so as to settle into the spotting hole and prevent the sample from floating out of the spotting hole.

This question shows that you are not clear enough about the principle of PCR, and it is recommended that you consult the manual of molecular biology experiments to learn more theoretical knowledge. Don't just experiment.

Strictly speaking, in electronic circuits, the amplifier used to match the impedance of the input and output of the pre- and post-amplifiers of the signal is the buffer.

The buffer amplifier is usually a 1:1 amplifier, which does not amplify the signal, but plays the role of impedance matching, reducing signal distortion and anti-interference, such as: emitter follower, which is a typical buffer amplifier.

For example, in the ECG machine, due to the difference in contact resistance, the ECG signal is very weak, etc., if the ECG signal is directly amplified, the amplifier is required to have a very high input impedance, which is difficult to do in hardware, then, the human ECG signal, through the lead wire, Wilson network, select and close before entering the preamplifier, first through the first-stage buffer amplifier, so that the signal and the amplifier input terminal to achieve impedance matching, to ensure that the ECG signal is not distorted, no interference.

In the electronic circuit system, the buffer is to play an auxiliary role for the input and output signals, and it is a pipe that transports water, and when the pressure is not enough, the pressure of the water is increased.

You can't do it with software! The encoder combines digital technology with traditional printing technology to create different special effects on special films. Grating, also known as diffraction grating, is an optical element that uses the principle of multi-slit diffraction to disperse light.

It is a flat piece of glass or metal engraved with a large number of parallel equal-width, equally spaced slits (engraved lines). The number of slits in the grating is large, generally tens to thousands per millimeter. Through the diffraction of each slit of the grating and the interference between the slits of the grating, the monochromatic parallel light forms a pattern with wide dark fringes and very thin bright fringes, and these thin and bright fringes are called spectral lines.

The position of the spectral lines varies with the wavelength, and when the polychromatic light passes through the grating, the spectral lines of different wavelengths appear at different positions to form a spectrum. So when we look over from one side of the lens, we see an image on a very thin line on the other side of the sheet. If we print these images on different lines, corresponding to the width of each lens, in separate lines on the back of the raster sheet, we can see different images when we look through the lens from different angles.

A buffer is a temporary storage area that has been created for the exchange of information.

The high slowdown is just to solve the speed mismatch between the CPU and the memory.