Basic operations, Downloading a job file, Navigating across screens, Creating a digital device circuit, Displaying simulation results, Exiting the program - Computer science

Basic Operations

All operations are performed using the mouse and keyboard. You can cancel the operation by pressing the key Esc or by activating the menu item μ. Here are the basic operations that are used in the study of digital devices.

Upload job file

The File menu item opens and the mouse draws:

• the option "2: Download & quot; is activated;

• in the opened window, the dark bar is set to the desired file NAME.DWG, then the mouse pointer is pressed with the & quot; Download. & quot; button.

Navigating across screens

By placing the mouse pointer over the individual parts of the two rectangles to the right of the Simulate, menu item, you can activate one of the 24 pieces of the sheet. If the left upper square (A) is activated (shaded) in the first rectangle, then by activating the parts 1, 2, 3, ..., 6 of the second rectangle, you can navigate the screens A1, A2, ..., A6. In Fig. 13.1 shows the notation of squares. You can get the following 24 screens: A1-A6, B1-B6, C1-C6, D1-D6.

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Creating a Digital Device Schematic

When performing this task item, it is advisable to use the help at the bottom of the screen. To do this, go to the Options menu item and install the birdies "ν & quot; activate the option "4: Help", and at the bottom of the screen you will see a prompt for the operation in Russian.

When constructing the circuit of a digital device and its design for modeling, the following operations are used:

1. Comp/Add - displays the individual components of the circuit on the screen. This operation can be implemented in two ways:

• Use the arrows at the top right of the screen or the keyboard tab to drag the column with the components until the required component appears, and then drag the desired component to the screen;

• After you press the A key, the Enter Gate Name prompt appears. After entering an element name, for example 2NAND, and pressing the Enter key, the specified item will be set to the position marked with the cursor;

2. Comp/Move - change the location of components on the screen;

3. Line/Add - connection of components. Calling the necessary components, they should be connected by lines. You can draw only vertical and horizontal lines. The beginning of the line is set by pressing the left mouse button, and its further route by clicking the right mouse button at break points. Lines can always be compressed or stretched (Line/Move operation);

4. Text/Add - marking of signals and text output. To display the time diagrams of signals, they should be labeled with labels (any text object is a label). You can use up to 200 tags. You can not label two signals with the same label. The Text/Add operation is activated by pressing the button with the A character or the left mouse button to the right of the blue rectangle labeled Add, after which a window appears in which the text is entered. After pressing the Enter key, the text is transferred to the screen at the cursor location. In cases where the Text/Add command fails to execute, the volume of the explanatory text can be increased if it is entered by replacing with the Def/Text command || ||, which can be created by simultaneously pressing the keys Alt and 1. The total number of text objects in any case will be no more than 200;

5. Def/Box - operations with a group of objects (including text). First of all, in Def/Box mode, using the rectangle, the required group of objects or text is highlighted. The rectangle is set by specifying the right bottom corner with the right mouse button and the upper left corner with the left mouse button. After that, the following operations are used:

• Add/Box - to copy a group of objects to the location indicated by the cursor;

• Zap/Box - to delete a group of objects;

• Move/Box - to move a group of objects to the location indicated by the cursor;

• Step/Box - for multiple copies of a group of objects and text horizontally, vertically and both ways.

Output of simulation results

The Analysis Limits window opens when you execute the Simulate menu item to simulate the input scheme (file NAME.DWG). Then, using the Simulation button located in the upper left corner of the screen, the menu items & quot; E: Select nodes & quot; and & quot; P: Patterns & quot ;, allowing you to specify:

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• Names (labels) of nodes in the Nodes monitored window for displaying timelines on the monitor screen;

• Datal-Datal6 generator signals affecting the circuit in the Pattern File Test window.

After returning to the Analysis Limits window, the parameters that provide the required viewing mode of the displayed time diagrams (number of simulation cycles, scale, etc.) are set. The mode of viewing the time diagrams is activated by the bottom button Simulate.

Exiting the program

is possible in two ways:

• Opens the μ menu window in the upper left corner of the screen and activates the last line of the "Esc: Exit." dragging the mouse cursor;

• by pressing one or more of the Esc keys, a window appears with the & quot; Are you sure you want to quit? & quot; The output is activated by clicking the Yes button.

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