Sunday, January 31, 2010

A+ Class 1/28/10 Processors



Our discussion today started with the CPU (Central Processing Unit), the two kinds that are out. They are socket and slot.




This is an example of a socket type Intel Category:Pentium III Microprocessor.






This is an example of a slot type 370.



We also got online and compared the prices of the different typ of memory (AMD and Intel). We also spoke about the IDE (integrated drive electronics) primary and secondary channel. The harddrive should always be the primary IDE on the motherboard and the jumper set to master.

As a lab assignment, we had to install (mounted) an optical drive. So set the jumper to slave(2).

NET+ Class 1/27/10 Week #3

Class started with a review of the OSI model.


What is a OSI model? It is a conceptual model of a network.


Who created it? Internation Standard Organization.


**** NOTE**** the ISO members could not come together to agree to make this a standard.


The purpose is to allow the various networks to communicate with each other.


Next, we discuss the various types of topology,connectors and cable.


Topology (5)


  1. bus

  2. ring

  3. star

  4. mesh(2)

  5. point-2-multipoint

Connectors (3)


  1. BNC

  2. T-connect

  3. F-type

Cable


  1. Coaxical

  2. Twisted Pair(3)

  3. Fiber Optics

Last we cover TIA/EIA wiring code.


Before the end of class. We had to make our own ethernet cable. We require wire stripping tools, two RJ-11 connectors , a crimping tool and the wiring diagram. To test the cable to see if it works. we had to plug one end into the commputer and the other into the network junction block. If done correctly, the bottom of the screen would show network connection.

C# Class 1/27/10 Foreach vs. Counter

Today's discussion was a about the foreach statement. In a nutshell, it is use to write/print/display multiple variables.

The counter statement has a different purpose. The purpose of the counter is to count.
ie. counter++

This is saying that you are adding one to the counter.

The instuctor talked to us about cloud computing. According to Wiki, is Internet - ("cloud") based development and use of computer technology ("computing"). In concept, it is a paradigm shift whereby details are abstracted from the users who no longer have need of, expertise in, or control over the technology infrastructure "in the cloud" that supports them.


Cloud computing describes a new supplement, consumption and delivery model for IT services based on the Internet, and it typically involves the provision of dynamically scalable and often virtualized resources as a service over the Internet.

A+ Class 1/26/10 REVIEW

Todays we had a short class period dues to a guest speaker at the school. So I class time was mostly a review of THURSDAY (1/21/10) class.


*************VERY IMPORTANT ******************


Hard drive is SECONARY STORGE!!!! Do not confuse it as primary storage. Also, there are different types of memory modules.

NET+ Week #2 -- MAN


What is a MAN?


A metropolitan area network (MAN) is a network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network (LAN) but smaller than the area covered by a wide area network (WAN).

A good example of a MAN would be when the Army Record Center on Goodfellow in St. Louis, MO. They was on both side of the street plus all over the backlot area. The WAN portion would be the Record center at both the Goodfellow Center and the page Center.

NET+ Week #2 -- HSSU WAN

This is an example of two different LAN's. One is at the Harris-Stowe State University School of Business, the other is Harris-Stowe State University Main Campus.

NET+ WEEK 2 OSI Model w/. Devices

This is a display of the OSI model with devices at the different layers. Also included on each layer an ideal of what is happening on each of the layers.

Tuesday, January 26, 2010

A+ Homework Week 2 (Ex: 5.1 pg. 214)












































































A+ Homework Week 2 (Ex: 3.3 pg. 149)

Please click on the images below to learn about degaussing.



C# Class 1/25/10

We continue talking about the array. Instead of holding values in a database, we stored them in an array. Our array had seven elements. So referencing will be 0, 1, 2, 3, 4, 5, and 6. So to display that data being held in the array, I had to reference it location. Here is the code.



private void button1_Click(object sender, EventArgs e)
{
string[] value2 = new string[7];
int[] value3= new int[2];
int zip;
//int ph;
value2[0] = textBox1.Text; //fname
value2[1] = textBox2.Text; //lname
value2[2] = textBox3.Text; //address
value2[3] = textBox4.Text; //city
value2[4] = textBox5.Text; //state
value2[5] = textBox7.Text; //phone

zip = Convert.ToInt32(textBox6.Text); //zip

value3[0] = zip; //equal textbox6.text

label15.Text = value2[0];// fname
label16.Text = value2[1];// lname
label17.Text = value2[2];// address
label18.Text = value2[3];// city
label19.Text = value2[4];// state
label20.Text = Convert.ToString(value3[0]);// zip
label21.Text = value2[5];//phone
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void button3_Click(object sender, EventArgs e)
{
textBox1.Text = ""; //fname
textBox2.Text = ""; //lname
textBox3.Text = ""; //address
textBox4.Text = ""; //city
textBox5.Text = ""; //state
textBox6.Text = ""; //zip
textBox7.Text = ""; //phone

label15.Text = ""; //fname
label16.Text = ""; //lname
label17.Text = ""; //address
label18.Text = ""; //city
label19.Text = ""; //state
label20.Text = ""; //zip
label21.Text = ""; //phone
}

private void button2_Click(object sender, EventArgs e)
{
this.Close();
}

Sunday, January 24, 2010

A+ Class 1/21/2010 EXPANSION SLOTS

Today in class, we picked up our discussion from last Tuesday. Today's topic: expansion slots. Our discussion was about the five different types of expansion slots listed below.

PCI - is a computer bus for attaching hardware devices in a computer.

Accelerated Graphics Port (AGP) - is a high-speed point-to-point channel for attaching a video card to a computer’s motherboard's, primarily to assist in the acceleration of 3D computer graphics.

PCI Express (Peripheral Component Interconnect Express) (PCIe) - is a computer expansion card standard designed to replace the older PCI, PCI-X and AGP standards.

AMR (Audio/Modem Riser) - specification defines a hardware scalable OEM PC mother board riser card and interface, which supports both audio and modem functions. An MR slot will provide a Modem function, while an AMR slot will provide both an Audio and Modem function. The modem is a WinModem.

CNR (Communication and Networking Riser) - The Specification defines a hardware scalable Original Equipment Manufacturer (OEM) mother board riser and interface that supports the audio, modem, and local area network (LAN) interfaces of core logic chipsets.

Please note that Intel has two chipset and they the North Bridge and the South Bridge. The surprise of the day came when he took out some computers and had us in the class to dissemble the different components off the motherboard. Then remove the motherboard and re-install everything in its proper order.

Now I know how Dr. Frankenstein felt. “It’s Alive”!!!!

Net+ Class 1/20/2010 OSI Model

Today in class, we discuss in more details about the OSI model. What is happening at each of the seven layers? We also talked about de-capsulation and encapsulation.





The instructor had a surprise for the class after our discussion. He had us to breakdown into two groups of threes so that we could build a P2P network. This is a peer-to-peer network. They had to share resources between them. We use two computers and a switch. We were also given two Ethernet cables to connect them.

Once they were connected together, I ping them to see if they was able to communicate with one another. We had to give each unit an IP address manually and a subnet address. Then we had to bring up the wizard to create a connection. Last, we designated one of the computers as a master to allow file sharing.

Thursday, January 21, 2010

Wednesday, January 20, 2010

C# What is UML and how is it used?


It is a graphical language that allows people who design object-oriental software system to use an industry-standard notation to represent them.

Otherwise you can say that it is graphical shorthand to explain what the programmer’s objective of the purpose of the program that they are coding. This concept would be employed doing the Design stage.

A+ Class 1/19/10 COMPUTER COMPONENTS

Today, (Stardate 20100119) we started on the talk about the backbone of the class. The Computer! What is a COMPUTER and what COMPONENTS are in it? We started with the motherboard.

1. Three different names
o Motherboard
o system board
o planar board)

2. Two different types
o Nonintegrated
o Integrated

3. The four different Form Factors
o Advance Technology Extended (ATX)
o Micro ATX or Mu ATX
o New Low-Profile Extended (NLX)
o Balanced Technology Extended (BTX)

4. Bus Architecture
o It is a subsystem that transfers data between computer components inside a
computer or between computers (WAN).

5. Motherboard Components
o Chipset
o Expansion slots and buses
o Memory slots and external caches
o CPU/Processor slots in sockets
o Power connector
o Onboard disk drive connector
o Keyboard connector
 Keyboard = purple
 Mouse = green
o Peripheral ports and connectors
o BIOS
o CMOS battery
o Jumpers and Dip switches

6. Two major function group of the chipset
o Northbridge
o Southbridge

It was starting to get real fun then, class was over. We ran out of time. Until next time people, “Same Bat-time, Same Bat-channel”.

A+ Changing the Setting for Multiple Monitors

1). Right-click a blank portion of the Desktop.
2). Click Personalize.
3). Click the Display Setting link.
4). Click on the picture of the monitor with the number 2 on it.










5). Check the Extend The Desktop Onto This Monitor box.



6). Click and Drag the second monitor to the desired virtual position around the primary monitor.


7). While the second monitor is still selected, chang it refresh rate and resolution, if necessary, as outlined in the previous section.

A+ How to change the refresh rate on your monitor in Windows Vista

1. Right-click a blank portion of the Desktop.
2. Click Personalize.
3. Click the Display Setting link.

4. Click the Advanced Setting button.


5. Click the Monitor tab.


6.Select the desired screen refresh rate from the drop-down menu.




A+ What is a computer and the components that makes a computer?

It is a machine that manipulate raw unprocess data,
then process the data according to a set of instructions
to produce useful information. A typical computer from
the store that is purchase consist of the following:

· Motherboard
· CPU/Processor/Fan
· Power Supply
· Hard Disk (storage)
· RAM (memory)
· Video Card
· Sound Card
· Optical Drive (DVD, CD, etc...)
· Case
· Keyboard (input device)
· Mouse (input device)

Computer monitors are normaly sold as a separated unit.
Don't for get to pick up a printer, some paper, ink and all
the cables to connect your devices.

Monday, January 18, 2010

C# Class Assignment (Homework)





C# Q&A

These are the different steps involve in the Software Development Life Cycle (SDLC) .
Requirement Stage - What the program suppose to do. This a brainstorming session to determine the purpose of the program.

Design Stage - Consist of the Pseudo Code and the Flow Chart. This is where the logic is drawn in English like instruction along with a visual aide of the steps of the program.

Implementation Stage - Consist of writing the code (copy and paste). This is where the code is written in computer language.

Testing and Debugging Stage - Is the program doing what it is suppose to do. This is where the program is check for logical and syntax errors.

Deployment Stage - Production. This is the stage where the program is put into production.

Maintenance and Retirement - Upkeep. This is the stage for upkeep and small modification and request.