Microsoft Excel: A Comprehensive Guide to Features and Functionality
Excel Features and Functionality
Data Entry and Manipulation
- AutoSum: Automatically calculates formulas, a powerful feature of electronic spreadsheets.
- Conditional Formatting: Changes the formatting (font color, border, shading) of cells based on their values. You can select one or more cells and create conditions for when and how they are formatted. These conditions can be based on the selected cell’s contents or the contents of another cell.
- Formatting Options: Control the following formats:
- Number
Cybersecurity Threats: Adware, Phishing, Viruses, and Trojans
What is Adware?
Adware is a type of free software supported by advertisements that show up in pop-up windows or on a toolbar on your computer or browser. Most adware is annoying, but safe. However, some adware is used to gather your personal information, track the websites you visit, or even record your keystrokes.
Where Does Adware Come From?
Just like spyware, adware is most often built into free software, but can also be installed on your browser or operating system through a security hole.
How to
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What is Adware?
Adware is a type of free software supported by advertisements that show up in pop-up windows or on a toolbar on your computer or browser. Most adware is annoying, but safe. However, some adware is used to gather your personal information, track the websites you visit, or even record your keystrokes.
Where Does Adware Come From?
Just like spyware, adware is most often built into free software, but can also be installed on your browser or operating system through a security hole.
How to
Read MoreOperating Systems Concepts Review
Process State Transitions
In Figure below, three process states are shown. In theory, with three states, there could be six transitions, two out of each state. However, only four transitions are shown. Are there any circumstances in which either or both of the missing transitions might occur?
Figure: A process can be in a running, blocked, or ready state. Transitions between these states are as shown.
- Process blocks for input
- Scheduler picks another process
- Scheduler picks this process
- Input becomes available
The
Read MoreComputer Organization and Architecture Fundamentals
Basic Concepts
- Computer technology is changing at a rapid pace.
- Computer architecture refers to those attributes that have a direct impact on the logical execution of a program.
- Architectural attributes include I/O mechanisms.
- Organizational attributes include hardware details transparent to the programmer.
- It is an architectural design issue whether a computer will have a multiply instruction.
- It is an organizational issue whether the multiply instruction will be implemented by a special multiply unit
Variables in Programming Languages: A Comprehensive Guide
Von Neumann Bottleneck
The speed of connection between memory and the processor is slower than the speed at which instructions can be executed.
Compiler Implementation
A program is translated into machine language, which can be directly executed (e.g., C, COBOL, C++, ADA).
Interpretation
No translation is performed; the program is interpreted by another program (e.g., JavaScript, PHP).
Hybrid Implementation
High-level language programs are interpreted into an intermediate language that can be easily interpreted.
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