4 Bit Processor Design

This processor is able to do simple logic and display that logic to a lcd display.

4 bit processor design.

In this project you will be using logisim to create a 16 bit two cycle processor. Enough with the vague design talk here s the circuit schematic for the nibbler 4 bit cpu. Yet despite its simple design the processor demonstrates many key concepts including the use of. Hemangee kapoor date of.

Although this machine has little practical utility it serves as a useful educational tool due in part to its relative simplicity. We used a program called xilinx to. A group of four bits is also called a nibble and has 24 16 possible values. In computer architecture 4 bit integers memory addresses or other data units are those that are 4 bits wide.

Click the image to zoom in to a full size view. Some of the first microprocessors had a 4 bit word length and were developed around 1970. Except for ram and rom all the chips shown here are common 7400 series parts. Traditional 4 bit computers are by now obsolete while recent quantum computers are 4 bit but also.

For a college level ecen160 class my pattern and i made a 4 bit processor. The whole system fits on a single page including the cpu itself and the i o devices so it s easy to wrap your head around. Because this project is rather complex you will need the following. This work is a complementary part for what we proposed in 1.

Two fundamental alu operations are addition and subtraction. This project will be a discrete 4 bit alu that will be constructed with 4000 series and 7400 series chips. But you could. It is similar to mips except that both the datapath and the instructions are 16 bits wide it has only 4 registers and memory addresses represent 16 bit words instead of 8 bit bytes word addressed instead of byte addressed.

Also 4 bit cpu and alu architectures are those that are based on registers address buses or data buses of that size. Hardware laboratory lab report design and fabrication of 4 bit processor group 16 name roll no priyatham bollimpalli 10010148 pydi prasanna sai kamanuru 10010150 revanth bhattaram 10010153 sunku vinesh reddy 10010167 under the guidance of dr. Design and fabrication of 4 bit processor 1. Department of computer science and engineering iit guwahati cs 223.

Basic understanding of boolean concepts. In this paper an undergraduate design experience for special purpose 4 bit microprocessor using the skills learned from digital. It is similar to mips except that both the datapath and the instructions are 16 bits wide it has only 4 registers and memory addresses represent 16 bit words instead of 8 bit bytes word addressed instead of byte addressed. By far my most complex project was the design and construction of a 4 bit processor using low level logic circuits.

That s because a microprocessor is an integrated circuit and way beyond the capabilities of even the most die hard hobbyist.