TAMS / Java / Hades / **applets** (print version): contents | previous | next#### Basic std_logic_1164 functions

**Description**

This applet is meant to demonstrate the basic NOT (inverter),
AND, and OR logic functions in the std_logic_1164 multilevel logic system.
To this end, it includes a special interactive switch
(hades.models.io.IpinStdLogic1164) that can directly generate
all logic values of the std_logic system.
Just click on the corresponding field in the switch's symbol
to generate that output value.
A click in the (0/1) field will toggle the output value between '0' and '1'.

std_logic_1164 NOT:

U X 0 1 Z W L H D
-----------------
U X 1 0 X X 1 0 X

std_logic_1164 AND:

U X 0 1 Z W L H D
-----------------
U | U U 0 U U U 0 U U
X | U X 0 X X X 0 X X
0 | 0 0 0 0 0 0 0 0 0
1 | U X 0 1 X X 0 1 X
Z | U X 0 X X X 0 X X
W | U X 0 X X X 0 X X
L | 0 0 0 0 0 0 0 0 0
H | U X 0 1 X X 0 1 X
D | U X 0 X X X 0 X X

std_logic_1164 OR:

U X 0 1 Z W L H D
-----------------
U | U U U 1 U U U 1 U
X | U X X 1 X X X 1 X
0 | U X 0 1 X X 0 1 X
1 | 1 1 1 1 1 1 1 1 1
Z | U X X 1 X X X 1 X
W | U X X 1 X X X 1 X
L | U X 0 1 X X 0 1 X
H | 1 1 1 1 1 1 1 1 1
D | U X X 1 X X X 1 X

Run the applet | Run the editor (via Webstart)

Impressum | 24.11.06

http://tams-www.informatik.uni-hamburg.de/applets/hades/webdemos/00-intro/03-stdlogic/switch1164_print.html