The scanners that are commonly used for scanning in Photoshop are:

Photoshop, as a common image processing software, is widely used to invoke scanners as well as directly scan results. This article describes how to use a scanner in Photoshop, using Photoshop CS as an example.

How to do it Start Photoshop first, click "File" to import "HP ScanJet 4070 TWAIN", i.e. select the scanner device, as shown in Figure 1 "Select Scanner Device":

Figure 1: Select the scanner device.

You will then be able to see the "HP Scan" screen and see the scan in the preview box. Pull the dotted box to select the desired range, and click "Accept" when the operation is completed, as shown in Figure 2 "HP Scan".

Figure 2: HP scan.

Figure 3: File processing.

Note: The processing speed depends on your computer's hardware configuration.

Figure 4: Photoshop scanning.

Once the scan is complete, it's time to save. Click "File Save as" and save. You can save ** to various formats such as bmp, jpeg, tif, etc., according to Photoshop's powerful storage features, as shown in Figure 5 "Save":

Figure 5: Save.

Photoshop also has the ability to convert saved files to other formats. For example, we can convert a BMP file to JPEG or other formats, including PDF. As shown in Figure 6, Select Save Type:

There is no requirement for a scanner, as long as it can be scanned.

Tools Raw materials.

Photoshop 2015, computer.

1. After opening the computer and launching Photoshop, click "File" in the upper left menu bar.

2. After clicking the file, select "HP ScanJet 4070 TWAIN" in the "Import" option in the drop-down list.

3. In the "Scan" screen, you can see the scanned ** in the preview box, select the range and click "Accept";

4. After clicking Accept, you can see the scanned ** in Photoshop;

5. After the scan** is completed, click "Save As" in the menu bar "File" to save the old historical record.

1. Open the PS software.

Click on the File option in the top left corner.

2. In the pop-up interface, click the Guide to Merge option, accompany the calendar, and then click WIA support.

3. After that, an interface will jump out, click on the start option.

4. In the Select Device interface, select the scanner you want to add. Tumble.

5. After that, you can successfully add the scanner to the PS software.

The specific steps to scan with PS are as follows:

Photoshop as an example:

1. First of all, open Naye Big PS and click on the "File" option in the upper left corner.

2. Then click on the "Import" option on this page, and then click on "WIA Support".

3. After that, click "Browse" on the page and select the location where you want to save the scan.

4. Then tick the "Open the acquired image in Photoshop" and "Create a unique subfolder with today's date" button in the page, and then click the "OK" option.

5. Then select the device you want to scan on that page and click on the "OK" option.

6. Finally, on the left side of the page, select the type of scan** according to your needs, and then click the "Scan" option.

Select A The conceptual differences between graphics and images are as follows:

There is a difference in basic concepts.

A graphic is a vector illustration made up of outer contour lines. That is, straight lines, circles, rectangles, curves, charts, etc. drawn by computers; An image is a bitmap composed of pixel dots and dots that captures the actual image by an input device such as a scanner or video camera.

The data is descriptive.

Graph: A set of instructions to describe the content of a graph, such as describing the positional dimensions, shapes, and so on of the various primitives that make up the graph. Description objects can be scaled arbitrarily without distortion.

Image: Describe pixels, intensity, and color arbitrarily with numbers. Descriptive information files are large and the objects described lose detail or are jagged during scaling.

Differences in screen display.

Graphics: Use specialized software to translate instructions describing graphics into on-screen shapes and colors.

Image: It is to digitally present the information of each point after the object is resolved at a certain resolution, which can be directly and quickly displayed on the screen.

Differences in the application occasions.

Graphics: Describe objects whose contours are not very complex and not very colorful, such as: geometric figures, engineering drawings, CAD, 3D modeling software, etc.

Image: Objects that contain a large number of details (such as light and dark changes, complex scenes, and rich contour colors), such as **, drawing, etc., can be processed with complex images through image software to obtain clearer images or produce special effects.

Differences in processing.

Graphics: Vector graphics are generated by the draw program, which can be independently moved, scaled, rotated and twisted on vector graphics and primitives. The main parameters are the instructions and parameters that describe the position, dimensionality, and shape of the element.

Image: Use image processing software (paint, brush, photoshop, etc.) to process the input image, mainly for routine processing of bit** parts and corresponding color palette files. However, you cannot control a transform over a part.

Because bitmaps take up a lot of storage space, data compression is generally required.

1. Open the PS software and click on the file option in the upper left corner.

2. In the pop-up interface, click on the Import option, and then click on WIA Support.

3. After that, an interface will jump out, click on the start option.

4. In the Select Device interface, select the scanner you want to add.

5. After that, you can successfully add the scanner to the PS software.

Taking PS CS6 as an example, the operation of other versions is similar.

2: The Wia support option can be found in the File - Import Options section of Photoshop. At this time, PS will ask which device to use.

Photoshop can't add a scanner, you have to install the scanner's own driver and scanning software.

Find the scanner driver on the Internet according to the scanner model.

The process of scanning ** into the computer with a scanner is actually the input-output process.

The scanner is the main equipment for text and input, equivalent to the eyes of the computer, which can convert the optical signal into an electrical signal through the optoelectronic device, convert the electrical signal into a digital signal through the analog-to-digital converter and transmit it to the computer, and input a large amount of text and information into the computer.

The key component of the scanner is the charge coupler, which uses a prism dichroic optical system, which uses a prism to separate natural light into three primary colors of red, green, and blue to scan the pattern.

Flatbed scanner, text and ** fixed in a glass window, the scanning head moves under the text or **, receiving the reflected light from the text or **, these reflected lines are reflected by a mirror system, focusing the light on the photodiode through the convex lens, turning the light into current, and finally converting it into digital information and storing it in the computer, it can scan at one time, read a whole page of text or **.

Performance metrics for the scanner include: optical resolution, number of color bits, scanning speed, and format size. Optical resolution, also known as horizontal resolution, is measured in pixels or dot inches. The number of color bits is the ability of the scanner to distinguish the best colors.

I hope I can help you with your doubts.

Answer]: b, c, d

The scanner is an important input trembling device, not an output skin cavity device. So the answer is BCD.