Difference between revisions of "ALU in Detail"
| Line 1: | Line 1: | ||
{{box|type=green_dark|text=Arithmetic and Logic Unit in Detail}} | {{box|type=green_dark|text=Arithmetic and Logic Unit in Detail}} | ||
{{box|type=l_green_light|text= You should have heard of an Arithmetic and Logic Unit before, while discussing a Computer CPU or a micro controller. In this tutorial we will look at what an ALU really is? <br /> | {{box|type=l_green_light|text= You should have heard of an Arithmetic and Logic Unit before, while discussing a Computer CPU or a micro controller. In this tutorial we will look at what an ALU really is? <br /> | ||
| − | We will discuss a 4 bit ALU; this would limit many possibilities 16. We would assume that associated registers and instruction set are also 4 bit. | + | We will discuss a 4 bit ALU; this would limit many possibilities 16. We would assume that associated registers and instruction set are also 4 bit.<br /> |
| + | {| class="wikitable" style="text-align:center" | ||
| + | |- | ||
| + | !colspan="2"| Inputs !!colspan="2"| Outputs | ||
| + | |- | ||
| + | ! ''A'' !! ''B'' !! ''S'' !! ''C'' | ||
| + | |- | ||
| + | | 0 || 0 || 0 || 0 | ||
| + | |- | ||
| + | | 1 || 0 || 1 || 0 | ||
| + | |- | ||
| + | | 0 || 1 || 1 || 0 | ||
| + | |- | ||
| + | | 1 || 1 || 0 || 1 | ||
| + | |- | ||
| + | |} | ||
| + | |||
=== The basic Unit: 1 bit ALU=== | === The basic Unit: 1 bit ALU=== | ||
Revision as of 11:11, 8 December 2013
Arithmetic and Logic Unit in Detail
You should have heard of an Arithmetic and Logic Unit before, while discussing a Computer CPU or a micro controller. In this tutorial we will look at what an ALU really is?
We will discuss a 4 bit ALU; this would limit many possibilities 16. We would assume that associated registers and instruction set are also 4 bit.
{
We will discuss a 4 bit ALU; this would limit many possibilities 16. We would assume that associated registers and instruction set are also 4 bit.
{