Computer software installation is a fundamental skill for ICT technicians, shaping the efficiency and security of computing environments across diverse Kenyan workplaces. From configuring systems in county government offices to deploying applications in financial institutions, understanding software types, user requirements, and acquisition methods ensures that solutions are fit for purpose and compliant with organizational needs. This chapter addresses the identification and selection of computer software, equipping technicians with the knowledge to navigate complex software ecosystems and deliver optimal installations.

1.1 Identification of computer software

Identifying computer software involves understanding its nature, categorising its types, and aligning software capabilities with user needs. In organisations such as universities, hospitals, and retail businesses, accurate identification ensures compatibility with existing infrastructure and supports operational goals. Effective identification also involves gathering detailed requirements from users to avoid costly mismatches or underutilised features.

1.1.1 Introduction to computer software

Computer software is the part of a computer system that tells the hardware what to do. An ICT technician must be able to recognise what a program is, which group it belongs to and what role it plays, because this knowledge guides every later step of installing, configuring and supporting software. Example: when a technician in a college computer laboratory is asked to prepare 40 computers, they must tell apart the operating system, the office programs, the drivers for the printers and the protective tools before starting work.

1.1.1.1 Definition of computer software

Computer software is a set of instructions and data that enables hardware to perform specific tasks. Instructions are written by programmers in a programming language, translated into a form the processor understands, and stored on a drive or other storage medium until they are needed. Without software, the processor, memory and storage of a computer would have nothing to act upon.

Example: a school computer laboratory may have identical hardware in every machine, yet one machine runs a spreadsheet for fee records and another runs a programming editor. The difference between them is the software installed.

Key characteristics of computer software include:

• Intangibility: Software cannot be physically touched, making its management reliant on digital storage and documentation.
• Upgradability: Software can be updated or patched to improve functionality or security without hardware changes.
• Dependency on hardware: Software requires compatible hardware to function, necessitating careful compatibility checks.
• Licensing: Software usage is governed by licences that define legal rights and restrictions, crucial for compliance.
• Vulnerability: Software can have security weaknesses, requiring regular updates and protective measures to safeguard data.

1.1.1.2 Classification of computer software

Classification places software into groups according to what it does, so that technicians know where each program fits in the computer system. Software is broadly classified into system software, application software, and middleware, each serving a distinct role in computing environments.

• System software: Manages hardware resources and provides a platform on which other software runs. Operating systems such as Windows or Linux belong here.
• Application software: Programs designed for end-user tasks, such as word processors, accounting systems or customer relationship management tools.
• Middleware: Facilitates communication and data management between disparate software components. It is often essential when integrating older systems with modern applications, for example linking a legacy stock database to a new point-of-sale program.

Software can also be classified by how it may be used and shared:

Software may also be grouped as general-purpose, which serves many users (such as a spreadsheet), or custom-made, which is written for one organisation's specific needs (such as a dispensing system built for a single clinic).

1.1.1.3 Types of computer software

The main types of software are described below, grouped under system software and application software. Understanding these types helps technicians recommend and install software that aligns with organisational workflows and technical capabilities. Example: a SACCO office may use a Linux server as its system software and accounting software as its application software to manage members' contributions.

Types of system software:

• Operating systems: Control hardware, memory, files and processes and provide the user interface. Examples are Windows, Linux and Android.
• Device drivers: Small programs that allow the operating system to communicate with devices such as printers, scanners and network cards. A printer that is connected but not working is often missing its driver.
• Utility programs: Tools that maintain and protect the computer, such as disk cleanup, file compression, backup tools and antimalware programs.
• Firmware: Software stored permanently in hardware chips, such as the BIOS or UEFI that starts a computer or the program inside a network router.
• Language translators: Compilers, interpreters and assemblers that convert programs written by programmers into machine code the processor can execute.

Types of application software:

• Word processors: Used to create and format documents such as letters, reports and examination papers.
• Spreadsheets: Used for calculations, budgets, tables and charts, for example a fee balance sheet.
• Database management systems: Store, organise and retrieve large amounts of related data, such as student records or patient registers.
• Presentation software: Used to prepare slides for training sessions and meetings.
• Graphics and desktop publishing software: Used to design posters, brochures, logos and edit images.
• Web browsers and email clients: Used to access websites, online services and electronic mail.
• Accounting and business software: Record sales, stock, payroll and financial statements for shops, SACCOs and cooperatives.
• Communication and collaboration software: Support video meetings, messaging and shared document editing between staff.

1.1.2 Collecting computer software user needs

Gathering user requirements is a critical step that shapes software identification and eventual installation success. In ICT environments, users range from hospital administrators needing patient management systems to agricultural cooperatives requiring inventory tracking applications. Understanding their workflows, challenges and expectations ensures that selected software enhances productivity rather than complicates processes.

Effective collection of user needs involves multiple techniques including interviews, questionnaires, observation, and document analysis. For example, an ICT technician working with a county government office may conduct interviews with staff across departments to identify essential features such as data security, multi-user access, and integration with existing databases. Documenting these requirements in clear, prioritised terms helps in selecting software that fits both technical and operational criteria.

Techniques for collecting user needs

• Interviews: One-on-one or group discussions to explore detailed user expectations and pain points.
• Questionnaires: Structured forms that gather quantitative and qualitative data from a wider user base.
• Observation: Direct monitoring of user interactions with existing software to identify inefficiencies.
• Workshops: Collaborative sessions where users and technicians brainstorm requirements and solutions.
• Document analysis: Reviewing existing process documents, manuals and reports to understand operational contexts.

Steps in collecting user needs

1. Identify the users and stakeholders. List the departments and people who will use or be affected by the software, such as clerks, supervisors and the system administrator.
2. Define the purpose of the exercise. State what problem the software should solve, for example replacing paper registers with a digital records system.
3. Choose suitable techniques. Use interviews for managers, questionnaires for many users, and observation where tasks are hard to describe.
4. Collect the information. Carry out the interviews, distribute the questionnaires and record findings carefully, noting the tasks users perform and the difficulties they face.
5. Record the existing environment. Note the operating system version, available memory and storage, network setup and peripherals, since these limit what software can be installed.
6. Analyse and prioritise the needs. Group similar requests and rank them as essential, important or desirable.
7. Document the requirements. Write them in a clear list or form that users can read and understand.
8. Confirm with users. Present the document to users for review and correction before it is used to guide the choice of software.

Information recorded in a user needs document

• Functional requirements: What the software must do, such as printing receipts, generating monthly reports or storing member records.
• User requirements: Who will use it, their skill level, and the number of users needing access at the same time.
• Hardware and system requirements: The processor, memory, storage and operating system available on the computers where the software will run.
• Security requirements: Needs such as user login, access levels and protection of confidential data.
• Compatibility requirements: The need to exchange data with existing programs, files and databases.
• Constraints: Limits such as budget, training time and the date by which the software must be working.

Chapter Summary

This chapter provides a comprehensive overview of computer software, beginning with its definition, classification, and different types, as well as the importance of understanding user needs when collecting software requirements. It then explores the critical factors that influence software selection and the various methods available for acquiring software to meet organizational demands. The chapter also covers the management of local user accounts, detailing the different types such as standard, administrator, and guest accounts, along with the processes for creating and configuring these accounts effectively. Emphasis is placed on the necessity of performing regular data backups, including the different backup types and the procedures for creating reliable backups. The installation process of computer software is explained in depth, including the use of installation media, types of software registration, and specific steps for installing software and anti-malware programs, highlighting acquisition and configuration aspects. Finally, the chapter discusses the importance of software configuration and introduces the tools used to customize and optimize software performance for end users.