OpenOffice.org OpenOffice - 3.3 Betriebsanweisung Seite 179

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 206
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 178
Since the OR gate will be connected to the two previously positioned AND gates, you
can delete the guiding line of the OR gate. Drag the 0.64 horizontal guiding lines C
and D over the inputs of the AND gates (Y=7.0 and 7.5 cm) and put two other lines
(E,F) on the remaining connections (Y=5.0 and 8.0 cm) as shown in Figure 226.
Deactivate all snap functions except Snap to grid. It is a good idea to zoom in so that
you can place the lead connections exactly over the intersection points. Drag the
connections singly from the Gallery to where you want to position them. You will need
to adjust their position with the mouse. The easiest way is to move the connection
diagonally to the desired location (see Figure 227).
The guiding lines are no longer needed and can be hidden (it is better to wait until
you have finished the drawing before you delete them). Your drawing should now
start to look like Figure 226.
Figure 226: Drawing a half adder – Step 4
The individual blocks must now be joined up so that the gates function as a half adder
system. To do this, you use connectors. Open the Connector toolbar. Use the standard
connector to join the OR to the two AND gates. All the other leads run
horizontally and you can use the direct connector .
When all six lead connections have been positioned, both signal wires should have a
small black circle added to their connection points. You can use the symbol for NOT
from the Gallery as the basis for this.
Figure 227: Setting the connections
Chapter 10 Advanced Draw Techniques 179
Seitenansicht 178
1 2 ... 174 175 176 177 178 179 180 181 182 183 184 ... 205 206

Kommentare zu diesen Handbüchern

Keine Kommentare