What is Pascal programming language?
What is the Pascal Programming Language?
Pascal is a high-level programming language. It was made by Niklaus Wirth in the early 1970s as a teaching language.
It was designed to be easy to learn and understand, and to encourage good programming practices such as structured programming and data structuring.
The name “Pascal” is an homage to French mathematician and philosopher Blaise Pascal.
Pascal is a procedural language, which means that it follows a top-down approach and the program is divided into procedures and functions.
It also has a simple, straightforward syntax and strong typing, which means that variables must be explicitly declared with a specific data type, and type checking is done at compile time.
It supports various data types like integers, real numbers, characters, and strings, and data structures like arrays, records, and sets.
This programming language is most suited as an introductory course as it is mainly used to teach programming techniques.
Also read: What is sql used for
What is pascal programming language used for?
It can create projects for platforms, processors, and operating systems. You can write code in a convenient programming environment and, at the same time, use a convenient paradigm.
Now we discuss a few names of Operating systems created with the help of Pascal programming languages.
LisaOS (Operating system)
A computer based on this operating system was released by the American company Apple in 1983. It was a protected memory operating system that had high demands on the processor and, to some extent, on the storage system.
The operating system supported multitasking and a paging file (Virtual Memory). Using the paging field resulted in a strong slowdown. The Lisa software was mostly coded in Pascal to save development time, given the high complexity of the software.
Classic Mac OS
Classic Mac OS (not to be confused with modern operating systems) was released by the American company Apple in the eighties of the 20th century. It was written in Pascal.
STIML OS
STIML is a 32-bit operating system written by programmers with the nicknames Born in the USSR( wrote the Kernel) and Hinstance (wrote Pascal services ) in FreePascal, around 2006-2007. Distributed under the BSD license.
The developers tried to ensure compatibility with DOS and UNIX systems. The structure of the microkernel is written in Assembler.
StreamOS
StreamOS is a 32-bit operating system written in 2008-2009 in object Pascal using FreePascalCompiler. The stream file system is also supported like UNIX by embedded virtual systems.
Classios
Classios (previously called PetrOS). A 32-bit operating system has been around since 2008 until the video was released. The system is written in Object Pascal. The source code can be viewed in the repository at SourceForge.net.
Free Pascal Operating System(FPOS)
Free Pascal Operating System is a 32-bit operating system that has been developed since 2010 in the FreePascal language by Yacine REZGUI, a programmer from Algeria.
The latest update found dates back to 2021. Fat12 file system and various peripherals are supported (Peripherals devices Like desktops, printers, laptop servers, and so on ).
Able to work with a speaker, has a memory manager, console, and much more. Distributed under the GPL-2.0 license.
Laksen /FP-RTOS
FP-RTOS, the operating system, was developed in Pascal and Assembler for devices based on the ARM architecture.
Development began 10 years ago. The last update found was in 2016. The source code is distributed under the MIT license on GitHub. Developer Laksen develops it.
Apple
Apple has always (and still is) supporting Pascal language – it was the main language in The Classic MacOS, and many legacy apps (An example could be mainframe applications that became legacy apps when the IT industry embraced client/server networks.) started up in it.
Until now, Object Pascal has been officially supported by XCode as a legacy language.
Banking
Pascal is a general-purpose programming language that can be used for a wide variety of applications, including those in the banking industry.
Here are a few examples of how Pascal might be used in banking:
- Automating banking transactions: Pascal can be used to create programs that automate the processing of banking transactions such as deposits, withdrawals, and transfers.
- Calculating interest and other financial calculations: Pascal can be used to create programs that perform calculations such as interest, loan payments, and amortization schedules.
- Database management: Pascal can be used to create programs that interact with databases containing customer information, account balances, and transaction histories.
- Risk management: Banks use complex models to estimate and manage the risk associated with different financial products and investments. These models can be implemented in Pascal.
- Automation of reports: Pascal can be used to create programs that generate reports such as account statements, financial reports, and compliance reports.
- Automation of compliance: Banks are subject to many regulations and compliance checks. Pascal can be used to create programs that automate compliance checks and reporting.
It’s worth noting that many of this task are nowadays performed using more specialized languages like C#, Java, Python or C++ and are mainly used for maintenance and older systems which still run on Pascal.
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