How to clean up and remove menu items from the Grub menu in Ubuntu 10.04

I like Ubuntu, but one thing that has always annoyed me about it was that it adds a lot of different Grub menu items that I never use. This isn't the end of the world, but I don't like to have my menus nice and neat, and this menu isn't

photograph of the Grub menu polluted with unused menu items

The only thing I ever use Grub for is to choose if I want to boot into Windows, Ubuntu, or any other operating system I might have installed at the time. This tutorial will show you how to remove the old versions of the Linux kernel, the recovery mode options, and remove the memory test (memtest86+) options.

  1. Removing the memory test (memtest86+)
  2. Removing the old Linux kernels
  3. Removing the recovery mode options
  4. Changing the default timeout duration, default Grub option, and Grub resolution

How to Install Additional Octave Packages in openSUSE

In openSUSE it's easy to install Octave. All you have to do is add the Pacman repository, search for Octave, and mark it for installation. For some, people the base version of Octave is enough for what they need to do, but sometimes additional packages are necessary for more specialized tasks. For example, I need the signals package do do things like finding correlations or designing filters. Unfortunately, in openSUSE adding the packages is a little bit trickier than installing the program itself. This tutorial will show you how to install additional packages. It assues that you already have Octave installed. At the time of writing I am using openSuse 11.2 and Octave 3.2.4.

  1. Install Additional Linux Packages
  2. Download Octave Packages
  3. Install Octave Packages

How to Compute the IFFT using only the forward FFT

How can you calculate the IFFT (Inverse Fast Fourier Transform) using only the forward FFT (Fast Fourier Transform)? It is easier than you think! Read on to find out how.

  1. Cheat-Sheet: Just tell me how!
  2. Derivation of the Method

HP 50g Derivatives, Integrals, and Summations Tutorial

Arguably of the best reasons for getting a calculator with a CAS (computer algebra system) is to solve derivatives, integrals, and summations symbolically. Here's how to do it with the HP 50g.

  1. Derivatives
  2. Indefinite Integrals
  3. Definite Integrals
  4. Summations

HP 50g Variables and Folders Tutorial

This is a basic tutorial on managing variables and folders on the HP 50g calculator. Deleting variables is easy once you know what to, but it gives people trouble at the start when learning how to use this calculator. Using folders effectively is important because it helps with organizing variables and lets you have more than one sets of variables or constants saved for different types of problems or classes. The file browser is useful for navigating folders but also good for helping you delete large amounts of variables quickly.

  1. Creating and Using Variables
  2. Deleting Variables
  3. Creating Folders
  4. Accessing Variables and Organizing Folders

Simon Says... "Wake Up!"

This alarm clock was made for a project in ECE362 at Purdue University, taught by Professor Meyer. The assignment was called a mini-project and our team of three had a little over a week to complete it. The guidelines of the project were very lenient and were to basically to create anything we wanted using the Freescale HS9S12C32 microcontroller, while utilizing at least 4 the following modules: analog to digital (ATD), pulse width modulation (PWM), timing (TIM), serial peripheral interface (SPI), and SCI (UART).

  1. Project Description
  2. Clock Portion Overview
  3. Puzzle Portion Overview
  4. Video
  5. What We Learned
  6. What We Would Do Differently
  7. Conclusion
  8. Pictures

Matlab Beginner's Guide

This tutorial is meant to help you get started with Matlab. It assumes you have never used Matlab and will teach you the very basics of the program. Lets get started.

  1. Basic Calculations
  2. Creating Variables
  3. Using Variables
  4. Tips

HP 50g Basic Graphing Tutorial

Graphing on the HP 50g took me a while to get used to. You have to go through a few separate menus to create a nice looking graph. This threw me for a loop because I was used to a calculator that had most the options for creating a graph in one place. Here is a little guide that will get you acquainted with the very basics of creating a graph on this calculator. There are three main steps.

  1. Entering the function
  2. Setting up the tick marks
  3. Setting up the window
  4. A few tricks

Best free software

There is a lot of great free software available for download on the internet but sometimes it is hard to find the programs that are really worth downloading. Below is a list of my favorites that I have found over the years and a link to where you can find them.

How to get your Website on the Internet

This guide is meant to teach you the very basics of getting a website online. It assumes that you have already created a website and now want to put it up on the internet for everyone to see. I was in this very situation just recently, but as you can obviously tell, not anymore! This is going to be a very simple and non-technical guide on how to get your website online. I found that most of the guides I found on the internet were either overly complicated, or focused solely on one aspect of the process. This left me searching for guides on the other parts. Now lets get started. The process basically comes down to three steps:

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