UMBC CMSC 313, Computer Organization & Assembly Language, Spring 2002, Section 0101
Circuits for Addition
Thursday 04/11, 2001
Assigned Reading in Murdocca & Heuring: 3.5
Assigned Reading in Neveln:
- Circuit diagram for a half-adder constructed from
a Sum-Of-Products Boolean formula and also using XOR gates.
- Circuit diagram for a full-adder constructed from
a Sum-Of-Products Boolean formula, using XOR gates and
using two half-adders.
- A 4-bit ripple-carry adder constructed using
4 full adders.
- A combined 4-bit adder/subtracter. (This really
works even when you try (-2) - (-8) = 6 without triggering
- A carry-lookahead adder.
Circuits in DigSim:
Following these links will launch the DigSim Java applet and
load the circuit described.
14 Nov 2003 10:17:28 EST
to Spring 2002 CMSC 313 Section Homepage