计算机英语讲课笔记04

Posted 2022-03-15 howard2005

文章目录

• I. Random Talk
• II. The Composition of a Computer
• • Step One
  • • 1. Source Code
    • 2. Final Effect
  • Step Two
  • • 1. Source Code
    • 2. Final Effect
  • Step Three
  • • 1. Source Code
    • 2. Final Effect
• III. Single Brace
• • 1. Generate Left Brace
  • • (1) Source Code
    • (2) Final Effect
  • 2. Right Brace
  • • (1) Source Code
    • (2) Final Effect
• IV. Reference Blog
• V. After-Class Assignment

I. Random Talk

• Look at the QQ icon in the taskbar. What’s its color? It’s gray. What does it mean? It means that my QQ is offline. Now I want to use my QQ to do something.
  
• five operations of the mouse: point to (move), click (to select the object), double-click (to open the document or run the program), right-click (to pop up the context menu of the selected object) and drag (to move or resize the selected object)
• single, double, triple, multiple
• size of the dress: S - Small, M - Middle, L - Large, XL - eXtensibly Large
• the five sense organs: eybrows, eyes, ears, nose, lips
• Make my QQ online: Right-click on the QQ icon and a context menu will pop up.
  
• I choose and click on the [hidden] option in the menu. You can have a look at the QQ icon, it’s not grey now and I can use it to communicate with my friends or colleagues.
  
• Now I send the screenshot of the sign-in result to the QQ group of our class.
  
• Let’s take a look at the picture.
  
• Thirty-three students have signed in and six students are not here but they asked for leave.

II. The Composition of a Computer

• In the markdown editor, we can use \\begincases...\\endcases to generate . In the body of the structure, \\\\ is used to start a new line. & is used for alignment.

Step One

1. Source Code

$Computer\\begincases
Hardware &(1)\\\\
Software &(2)\\\\
\\endcases$

2. Final Effect

• $Computer\begin{array}{ll}Hardware& (1)\\ Software& (2)\end{array}$

Step Two

1. Source Code

$Computer\\begincases
Hardware \\begincases
Control\\ Unit \\\\
ALU \\\\
Storage\\ Devices\\\\
Input\\ Devices\\\\
Output\\ Devices\\\\
\\endcases\\\\
Software\\begincases
System\\ Software\\\\
Application\\ Software\\\\
\\endcases \\\\
\\endcases$

2. Final Effect

• $Computer\{\begin{array}{l}Hardware\{\begin{array}{l}ControlUnit\\ ALU\\ StorageDevices\\ InputDevices\\ OutputDevices\end{array}\\ Software\begin{array}{l}SystemSoftware\\ ApplicationSoftware\end{array}\end{array}$

Step Three

1. Source Code

$Computer\\begincases
Hardware \\begincases
\\left. \\beginmatrixControl\\ Unit \\\\
ALU \\\\ \\endmatrix\\right \\CPU\\\\
Storage\\ Devices\\\\
Input\\ Devices\\\\
Output\\ Devices\\\\
\\endcases\\\\
Software\\begincases
System\\ Software\\\\
Application\\ Software\\\\
\\endcases \\\\
\\endcases$

2. Final Effect

• $Computer\{\begin{array}{l}Hardware\{\begin{array}{l}\begin{array}{c}ControlUnit\\ ALU\end{array}CPU\\ StorageDevices\\ InputDevices\\ OutputDevices\end{array}\\ Software\begin{array}{l}SystemSoftware\\ ApplicationSoftware\end{array}\end{array}$

III. Single Brace

1. Generate Left Brace

(1) Source Code

$Computer=\\left\\
\\beginmatrix
 Hardware\\\\
 Software
\\endmatrix
\\right.$

(2) Final Effect

$Computer=\begin{array}{c}Hardware\\ Software\end{array}$

2. Right Brace

(1) Source Code

$\\left.
\\beginmatrix
 Hardware \\
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