MODULE 1
ISABEL SIEH – 13-year-old Filipino Programmer
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COMPUTER PROGRAM - is a set of instructions that you write to tell a computer what to do.
PROGRAMMER - a person who writes computer programs
PROGRAMMING - is the action or process of writing computer programs.
LEVELS OF PROGRAMMING LANGUAGES
1. MACHINE LEVEL LANGUAGE - consists of a set of instructions that are in the binary form 0 or 1.
a. The only language that is ever actually executed by a computer
b. Composed of instructions encoded as strings of 0's and 1's.
c. Never written and rarely read directly by programmers
2. ASSEMBLY LANGUAGE - contains mnemonic commands such as mov, add, sub, etc.
a. 1-1: One assembly language instruction corresponds to one machine language instruction
b. The Assembler (a program) translates assembly code into machine code.
3. HIGH LEVEL LANGUAGE - consists of English-like statements that are easy to understand.
a. Assembly language is still tedious to work in so most work done in HLL.
b. Translated into machine language by a Compiler (sometimes an intermediate language).
c. One-to-many: One HLL statement translates into several or several dozens of machine
instructions.
Compiler
The language processor that reads the complete source program written in high level language as a
whole in one go and translates it into an equivalent program in machine language.
Assembler
The Assembler is used to translate the program written in Assembly language into machine code.
Interpreter
The translation of single statement of source program into machine code is done by language
processor and executes it immediately before moving on to the next line.
The C# Programming Language
• C# was developed as an object-oriented and component-oriented language
• It exists as part of the Visual Studio .NET package
• C# (like Java) is modeled after the C++ programming language
• Pointers are not used in C#
• C# does NOT require the use of object destructors, forward
declarations, or #include files
• It has the ability to pass by reference
• Multiple inheritance is not allowed in C#
Flowchart
MODULE 2
Use of symbols and phrases to designate the logic of how a problem is solved.
A common method for defining the logical steps of flow within a program by using a series of symbols
to identify the basic Input, Process, and Output (IPO’s) function within a program.
Basic Symbols in Flowcharting
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Terminal
Preparation/ Initialization
Input / Output
Processing
Decision
On Page Connector
Off Page Connector
Flowlines
Operators Commonly Used in Flowcharting
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Arithmetic Operators
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Addition
Subtraction
Multiplication
Division
Modulo Division
• Relational/Comparison Operators