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Computer literacy

You know how to use a computer to perform basic tasks such as operating the basic software systems, platforms, and other computer programs commonly used in the workplace.

What is a Computer?

An electronic device that inputs data, processes data (converting it into information that is useful to people) outputs, and stores information.

Information Processing System

It refers to the manipulation of digitized information by computers and other digital electronic equipment.

Data

a collection of independent and unorganized facts.

Information

The processed and organized data presented in a meaningful form.

Data Processing

The course of doing things in a sequence of step

HARDWARE

the tangible part of a computer system.

SOFTWARE

the non-tangible part that tells the computer how to do its job.

PEOPLEWARE

refers to people who use and operate the computer system, write computer programs and analyze and design the information system.

(INPUT)

It accepts and gathers data

(PROCESSING)

It processes data to become information.

(STORE)

It stores data and information.

(OUTPUT)

It presents information.

A computer program or software

a series of instructions that tell a computer how to carry out a processing task.

Output device

displays, prints, or transmits the results after processing.

An algorithm

an organized sequence or list of clear steps or operations needed to solve a given programming problem

In algorithm efficiency

speed is on how long an algorithm takes to produce its result.

In algorithm efficiency

memory is concern on how much resources an algorithm takes to produce its result.

Stepwise refinement

is a process for developing a detailed algorithm by gradually adding detail to a high-level algorithm

A problem

refers to a matter or situation that is needing to be dealt with and overcome.

Step 1 of Algorithm Formulation

obtain a description of the problem

Step 2 of Algorithm Formulation

analayze the problem

Step 3 of Algorithm Formulation

develop a high level algorithm

Step 4 of Algorithm Formulation

refine the algorithm by adding more detais

Step 5 of Algorithm Formulation

review the algorithm

Software Development Life Cycle (SDLC)

is a framework that defines the steps involved in the development of software at each phase. It covers the detailed plan for building, deploying and maintaining the software.

Requirement Gathering and Analysis

all the relevant information is collected from the customer to develop a product as per their expectation

Design

the requirement gathered in the SRS document is used as an input and software architecture that is used for implementing system development is derived.

Implementation or Coding

starts once the developer gets the Design document. The Software design is translated into source code. All the components of the software are implemented in this phase.

Analysis of the Solution

It takes computer science to make it simple. Estimation of how much time and memory an algorithm takes is fundamental in coming up with a solution.

Testing, debugging and integration

the developed software is tested thoroughly and any defects found are assigned to developers to get them fixed.

Maintenance

if any issue comes up and needs to be fixed or any enhancement is to be done is taken care by the developers.