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Unit 1: Data Handling using Pandas -I

Introduction to Python Libraries: Pandas and Matplotlib

Python offers powerful libraries for data handling and visualization, with Pandas and Matplotlib being two of the most prominent. Pandas is primarily used for data manipulation and analysis, while Matplotlib is used for creating static, interactive, and animated visualizations in Python.

Data Structures in Pandas: Series and DataFrames

Series

A Series is a one-dimensional labeled array capable of holding any data type (integers, strings, floating point numbers, Python objects, etc.). The axis labels are collectively referred to as the index.

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Unit 1: Introduction to Computer System

Evolution of Computing Devices

The evolution of computing devices has been marked by significant advancements from early mechanical calculators to modern digital computers. The development of these devices has been driven by the need for faster processing, increased storage, and more versatile applications.

Components of a Computer System and Their Interconnections

A computer system consists of several key components, including the Central Processing Unit (CPU), memory, input/output devices, and storage units. These components are interconnected through various buses and interfaces, allowing them to communicate and function as a cohesive unit.

• CPU: Often referred to as the brain of the computer, the CPU performs arithmetic and logic operations necessary for program execution.
• Memory: Acts as the internal storage area in the computer. It is primarily divided into primary memory (RAM and ROM) and secondary memory (like HDDs and SSDs)

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Unit 1: Computational Thinking and Programming – 2 Detailed Breakdown

Functions in Python

Functions are a fundamental concept in Python, allowing for modular, manageable, and reusable code. Here are the different types of functions and key concepts associated with them:

• Types of Functions:
  • Built-in functions: These are pre-defined in Python and are always available, such as print() and len().
  • Functions defined in modules: These need to be imported from external libraries or modules before they can be used, like datetime.now() from the datetime module.
  • User-defined functions: Functions that you define yourself to perform specific tasks.

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Unit 1: Computer Systems and Organisation Overview

Basic Computer Organisation

Computer systems consist of several core components that enable them to function and perform tasks. These components include:

• Hardware: The physical parts of a computer such as the CPU, memory units, and I/O devices.
• Software: Programs and operating systems that run on hardware, directing its operations.
• Input Devices: Tools used to input data into a computer (e.g., keyboard, mouse).
• Output Devices: Devices that output data from a computer (e.g., monitors, printers).
• CPU (Central Processing Unit): Acts as the brain of the computer, processing instructions.