Difference between revisions of "ALU in Detail"
| Line 3: | Line 3: | ||
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. | ||
| − | === The basic Unit: 1 bit | + | === The basic Unit: 1 bit ALU=== |
| + | |||
| + | [[File:1bitALU.jpg|400x350px|framed]] | ||
We assume you are familiar with logic gates, and also have come across a 1 bit adder. It simple adds two 1 bit inputs as shown below. | We assume you are familiar with logic gates, and also have come across a 1 bit adder. It simple adds two 1 bit inputs as shown below. | ||
}} | }} | ||
Revision as of 09:24, 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.
The basic Unit: 1 bit ALU
We assume you are familiar with logic gates, and also have come across a 1 bit adder. It simple adds two 1 bit inputs as shown below.