Question D.1: Draw the circuit in Fig. D.7 using Schematics....

We will follow the three steps mentioned above. We begin by doubleclicking the Schematics icon. This provides us with a blank screen as a worksheet to draw the circuit on. We now take the following steps to create the circuit in Fig. D.7.
To place the voltage source, we need to:

1. Click Draw/Get New Part (or type < Ctrl-G ).

2. Type VSRC in the Part Browser Basic box.

3. Click OK (or type < Enter> ).

4. DRAG the part to the desired location on the screen.

5. CLICKL to place VSRC and CLICKR to terminate placement mode.

At this point, only the voltage source V1 in Fig. D.8(a) is shown on the screen, highlighted red. To place the resistors, we need to:

1. Click Draw/Get New Part.
2. Type R in the Part Browser Basic box.
3. Click OK.
4. DRAG resistor to R1’s location on the screen.
5. CLICKL to place R1.
6. CLICKL to place R2 and CLICKR to terminate placement mode.
7. DRAG R2 to its location.
8. Edit/Rotate (or type <Ctrl-R>) to rotate R2.

At this point, the three parts have been created as shown in Fig. D.8(a). The next step is to connect the parts by wiring. To do this:

1. Click Draw/Wire to be in wiring mode, indicated by the pencil cursor.
2. DRAG the pencil cursor to the top of V1.
3. CLICKL to join the wire to the top of V1.
4. DRAG the dotted wire to the top corner.
5. CLICKL to turn wire segment solid, and anchor at corner.
6. DRAG dotted wire to left of R1.
7. CLICKL to turn wire segment solid and anchor to left of R1.
8. CLICKR to end placement mode.

Follow the same steps to connect R1 with R2 and V1 with R2. (You can resume the wiring mode by pressing <Space bar> .) At this point, we have the circuit in Fig. D.8(b), except that the ground symbol is missing. We insert the ground by taking the following steps:

1. Click Draw/Get New Part.
2. Type AGND in the Part Browser Basic box.
3. Click OK.
4. DRAG the part to the desired location on the screen.
5. CLICKL to place AGND and CLICKR to terminate placement mode.

The last thing to be done is to change or assign values to the attributes. To assign the attribute 12V to V1, we take these steps:

1. DCLICKL on the V1 symbol to open up the PartName dialog box.
2. DCLICKL on the DC =  attribute.
3. Type + 12 V  (or simply 12) in the Value box.
4. Click Save Attr.
5. Click OK.

To assign 5k to R1, we follow these steps:

1. DCLICKL on 1k attribute of R1 to bring up the Set Attribute Value dialog box.
2. Type 5k in the Value box.
3. Click OK.

Use the same procedure in assigning value 2k to R2. Figure D.8(c) shows the final circuit.