CBSE Class 11 Accountancy Chapter 5: Applications of Computers in Accounting NCERT Solutions

Solution: A computer system is comprised of six fundamental elements that work together to process information. These elements are:

1. Hardware: This refers to all the physical components of the computer that you can see and touch. Examples include the keyboard, mouse, monitor, central processing unit (CPU), and hard drive. Users interact with the computer through hardware devices.
2. Software: This is a set of programs and instructions that tell the computer hardware what tasks to perform. There are several types of software, including:
   • Operating System (e.g., Windows, macOS)
   • Utility Programs (e.g., antivirus software, disk cleanup tools)
   • Application Software (e.g., word processors, accounting software)
   • Language Processors (e.g., compilers, interpreters)
   • System Software (low-level software managing hardware)
   • Connectivity Software (e.g., web browsers, network drivers)
3. People: The users and professionals who operate and manage the computer system are vital. This category includes system analysts who design systems, programmers who write code, and operators who run the day-to-day operations.
4. Procedures: These are the established rules and methods that dictate how operations are performed to achieve specific results. They can be oriented towards hardware, software, or internal organisational processes.
5. Data: This refers to the raw facts, figures, and symbols that are entered into the computer system for processing. Data can be in the form of numbers, text, images, or sounds.
6. Connectivity: This element describes how a computer system is linked to other electronic devices or networks, enabling communication and data sharing. This can be achieved through telephone lines, satellite links, or microwave transmissions.

Solution: Computer systems offer several significant advantages when compared to traditional manual systems for accounting and other tasks. These distinctive benefits include:

• High Speed: Computers can process vast amounts of data and perform complex calculations much faster than humans, significantly reducing the time required for tasks.
• Accuracy: When programmed correctly and operated properly, computers perform calculations and data processing with a very high degree of accuracy, minimising errors common in manual systems.
• Reliability: Computer systems are generally reliable for performing repetitive tasks consistently without fatigue or variation, ensuring dependable results over time.
• Versatility: A single computer system can be used for a wide range of applications, from accounting and data analysis to communication and design, making it a flexible tool.
• Storage: Computers can store enormous amounts of data in a compact form (e.g., on hard drives, SSDs, or cloud storage) and retrieve it quickly when needed, which is far more efficient than manual filing systems.

Solution: The main components of a computer system can be represented in a block diagram to show how they interact. The fundamental blocks are:

A typical block diagram includes:

• Input Unit: Devices like keyboards and mice that allow data and instructions to be entered into the computer.
• Memory Unit (Primary Storage): This is where the computer stores data and instructions that are currently being processed. It provides fast access but has limited capacity.
• Central Processing Unit (CPU): This is the 'brain' of the computer, consisting of:
  • Arithmetic Logic Unit (ALU): Performs all arithmetic (addition, subtraction) and logical (AND, OR, NOT) operations.
  • Control Unit: Manages and coordinates the operations of all other components of the computer system, directing the flow of data and instructions.
• Output Unit: Devices like monitors and printers that display or present the processed information to the user.
• Secondary Storage: Devices like hard drives and SSDs used for long-term storage of data and programs. It is non-volatile and has a larger capacity than primary memory.

These units are interconnected, with the Control Unit and Memory Unit often shown centrally, managing the flow of data from Input Units to processing (CPU) and Memory, and then to Output Units or Secondary Storage.

Solution: A Transaction Processing System (TPS) is a type of information system that collects, stores, modifies, and retrieves the data related to an organisation's routine transactions. These systems are critical for the day-to-day operations of a business. Here are three examples:

1. Automatic Teller Machine (ATM) Systems: ATMs allow bank customers to perform basic financial transactions like withdrawals, deposits, and balance inquiries. Each transaction is recorded, validated, and updated in the bank's central database in real-time.
2. Payroll Applications: These systems automate the process of calculating employee salaries, wages, deductions (like taxes and insurance), and generating paychecks or direct deposit transfers. They handle a high volume of routine transactions for all employees.
3. Order Processing Systems: Used extensively in retail and e-commerce, these systems manage the entire lifecycle of a customer order, from placement (online, phone, or in-person) to fulfillment. They update inventory levels, generate invoices, and trigger shipping processes, handling numerous order transactions daily.