University Projects¶

postfixcalc¶

postfixcalc is a simple yet powerful mathematical expression evaluator built around postfix notation. It takes ordinary infix expressions, parses them through Python's AST, transforms them into a postfix representation, and evaluates the resulting expression while preserving operator precedence and parentheses.

What makes this project interesting is that it exposes the intermediate stages of the evaluation process rather than treating the expression as a black box. It provides access to the parsed AST, extracted and flattened expressions, parenthesized representations, numerized tokens, postfix notation, and the final result, while also introducing calculation and string-representation timeouts for expensive expressions.

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from postfixcalc import Calc

calc = Calc("(2 ^ 32) ^ (2 ^ 15) + -1")

print(calc.strparenthesized)
# (((2 ^ 32)) ^ ((2 ^ 15))) + (-1)

print(calc.postfix)
# [2, 32, '^', 2, 15, '^', '^', -1, '+']

print(calc.stranswer(15, 15))
# 674114012549907...068940335579135

plumacalc¶

plumacalc is a web-based calculator built with Python and Django, designed around a simple interface while still exposing the mechanics behind each calculation. It supports common arithmetic operations, parentheses, powers, rational numbers, and can show the postfix representation used to evaluate an expression.

The project also explores the engineering side of a calculator service: calculation history, pagination, copyable results, meaningful error messages, and protection against expensive calculations through configurable execution and string-generation timeouts. It combines a small mathematical evaluator with a complete web application and persistence layer.

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cpu¶

This project is a simple single-cycle CPU implemented in VHDL as a computer-architecture project. The goal was to understand the fundamental relationship between an instruction set, datapath, ALU, control unit, and the signals that connect them, while making the architectural decisions explicit in the project's documentation.

The CPU supports a small 32-bit instruction set and is accompanied by its own assembler, written in Python. The project can be compiled with GHDL and inspected through GTKWave, making it possible to follow the design from assembly instructions through machine code and into the hardware-level execution of the processor.

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