1 Bit ALU

[Turbo46]

Im struggling through my uni coursework before i return back to uni, and im currently looking for the truth table( not function table) for the 1 bit ALU. The reason i need this is because we are simulating the circuit in multisim whilst using a word generator and a logic analyser. Therefore i have to put in the correct logic sequence in the word generator to check the circuits funtionaliy! Does anyone have any ideas or a good web link to the truth a truth table? <p>

[jwax]

Curious Turbo, what is a 1 bit ALU at the uni?

[russlk]

Try a google search!

[dyarker]

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by jwax:
Curious Turbo, what is a 1 bit ALU at the uni? <p>More seriously, 1 bit addition is Exclusive OR.
0b + 0b = 0b
1b + 0b = 1b
0b + 1b = 1b
1b + 1b = 0b (10b without the carry bit)<p>1 bit multiplication is AND.
0b * 0b = 0b
1b * 0b = 0b
0b * 1b = 0b
1b * 1b = 1b
(For strictly one bit out. If what you call "ALU" also includes sign and carry outputs, then it's more complicated. Therefore jwax's question maybe.)