C++ Operator Overloading and Polymorphism

Posted by on Feb 21, 2025 in Computers | 0 comments

Member Operators

Member operators are functions that define the behavior of operators when used with a class’s objects.

  • Unary: One operand. Examples: ++i, --i, +value, -value. Declaration: return_type operator ++/--()
  • Binary: Two operands. Examples: =, +=, -, *, /, ==, &&. Declaration: return_type operator symbol (type [identifier])
  • Ternary: Three operands. Example: condition ? expression1 : expression2

Operators can be overloaded as:

  • Member operators: Defined within the class, with access to
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Assembly Code Examples: Periodic Interrupts and Keypad Access

Posted by on Feb 21, 2025 in Computers | 0 comments

Example 1: Periodic Interrupt and Counter

This program demonstrates a periodic interrupt that increments a counter (0 to 99) and prints its value to the text display.


JMP boot
JMP isr

stackTop EQU 0xFF
txtDisplayTens EQU 0x2E0
txtDisplayUnits EQU 0x2E1

counter: ; the counter
 DW 0

boot:
 MOV SP, stackTop ; Set SP
 MOV A, 2 ; Set bit 1 of IRQMASK
 OUT 0 ; Unmask timer IRQ
 MOV A, 0x20 ; Set timer preload
 OUT 3
 STI
 HLT

isr:
 PUSH A
 PUSH B
 PUSH C
 MOV A, [counter] ; Increment the
 INC A ; counter
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Oracle SQL and PL/SQL Quick Reference

Posted by on Feb 20, 2025 in Computers | 0 comments

UPPER() lower() InitCap() LENGTH() ROUND(num, 2) TRUNC(num,2)

SUBS/TR(string, initial (pos: from left, neg: from right), length (optional))

INSTR(string, lookup (case sensitive), starting pos, nth occurrence (optional))

LPAD(string, total length, fill), RPAD(string, total length, fill character)

REPLACE(‘original’, ‘find’, ‘replace’), TRIM(whattotrim FROM string)

MOD(number, divisor) -> return remainder

MONTHS_BETWEEN(date, date), ADD_MONTHS(date, # of months to add)

NEXT_DAY(date, ‘FRIDAY’)

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Understanding PC Components and Startup Processes

Posted by on Feb 20, 2025 in Computers | 0 comments

Understanding PC Components and Startup

What is the BIOS?

The BIOS (Basic Input/Output System) is what allows the computer to start. It controls the keyboard and floppy disk, and allows control to be passed to the operating system.

What is the CMOS?

The CMOS (Complementary Metal-Oxide-Semiconductor) is a small RAM chip that stores the system’s configuration.

What is Setup?

Setup is a crucial program recorded in the BIOS chip. It’s used to change the modes of transmission and the recognition (or non-recognition)

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Understanding Computer Capabilities: Diligence, Versatility, and Memory

Posted by on Feb 20, 2025 in Computers | 0 comments

Understanding Computer Capabilities

Diligence

Unlike humans, computers never tire of repetitive tasks. They can continually work for hours without creating errors. Even when a large number of executions are needed, each execution requires the same duration and is executed with the same accuracy.

Versatility

Versatility is the quality of being flexible. Today, computers are used in various fields of our daily lives. For example, they are used as personal computers (PCs) for home use, for business-oriented

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Oracle Products and Database Architecture Explained

Posted by on Feb 19, 2025 in Computers | 0 comments

Oracle Products

Oracle Databases

The Oracle database is designed for Enterprise Grid Computing.

Oracle Application Server

Certified for Java 2 Platform Enterprise Edition (J2EE), Oracle provides the tools to develop and deploy Web-based applications.

Oracle Applications

Oracle E-Business Suite is a complete set of business applications.

Oracle Collaboration Suite

Oracle Collaboration Suite is a single integrated system for all data communications.

Global Grid Forum (GGF)

The Global Grid Forum (GGF) is an

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