Microchip Essay

Low Bandwidth USB data Logger
By
KHOO JENG HENG

PROJECT 1

A PROPOSAL
SUBMITTED TO
Universiti Tunku Abdul Rahman
In partial fulfillment of the requirements
For the degree of
BACHELOR OF INFORMATION TECHNLOGY (HONS)
COMPUTER ENGINEERING
Faculty of Information and Communication Technology
(Perak Campus)

ABSTRACTS
Oscilloscope is electronic test instrument that we can use to observe the different of signal voltages, change of an electrical signal over time like time and voltage to describe a shape which is continuously graphed against a calibrated scale. By using this tool we able to analyze the waveform for such as amplitude, frequency, rising time, time interval, distortion and others. In this project we are going to use PIC32MX450F256L

Microchip Technology had achieved sold more than 6 billion microcontroller at the same time.
When time reach 2011, Microchip Technology company ships over a billion processors every year. According to company Microchip Technology shipped the over 10 billion PIC microcontrollers at the time of September 2011.Microchip Technology Company takeover Standard Microsystems Corporation (SMSC) in the time of August 2012.

1.2 Problem Statement

Normal digital oscilloscope that we often see in daily and use in lab for our specific purpose which is big size, heavy in weight around 6 pound and also cost expensive (some oscilloscope cost $400). It is hard for people like students to buy his or her own instrument, but have no choice need to go school or work place to carry out the project. Furthermore, the oscilloscope monitor screen is smaller and hard to observe from the waveform, and sometime may have human error such as mistaken records from the results.

1.3 Project Scope & Objectives

1.3.1 Project Objective
For the general objective of this project is to modeling a PC base oscilloscope by using the Microchip board PIC32MX450F256L. We want the project is about less in weight, convenient, accurate results, cheaper and easy to set

With the added systems, the digital oscilloscope collects data for the entire waveform and then displays it. When we connect between digital oscilloscope probe and circuit, the vertical system regulate the amplitude of the signal, same in the analog oscilloscope. Analog to Digital converter (ADC) in the acquisition system samples the signal at discrete points in time and converts the signal’s voltage at these points to digital values called sample points. Horizontal system’s will sample clock determines how often ADC will takes a sample. The rate at which the clock “ticks” is called the sample rate and is measured in samples per second. Sample points from the ADC are stored in memory as waveform points. It can be more than one sample point may make up one waveform point. One waveform recorded for each Waveform points. The number of waveform points used to make a waveform record is called the record length. Trigger system determines the start and stop points of the record. After store in memory the display can received the record