There are three major types of businesses:1. Service BusinessA service type of business provides intangible products (products with no physical form). Service type firms offer professional skills, expertise, advice, and other similar products. Examples of service businesses are salons, repair shops, schools, banks, accounting firms, and law firms.2. Merchandising BusinessThis type of business buys products at wholesale prices and sells the same at retail prices. They are known as "buy and sell" businesses. They make a profit by selling the products at rates higher than their purchase costs. A merchandising business sells a product without changing its form. Examples are grocery stores, convenience stores, distributors, and other resellers.3. Manufacturing BusinessUnlike a merchandising business, a manufacturing business buys products to use them as materials in making a new product. Thus, there is a transformation of the products purchased. A manufacturing business combines raw materials, labor, and factory overhead in its production process.

According to Wikipedia: A calculator is a machine that allows people to do math operations more efficiently. For example, many calculators will add, subtract, multiply, and divide. Some also calculate square roots, and more complex calculators can help with calculus and draw function graphs. Calculators are ubiquitous. Smartphones and other computers can also serve as a calculator.

Some calculators, such as the abacus, will work without requiring batteries. Others, like the electronic calculator, need batteries. There are two main types of electronic calculators: simple calculators—which can only add, subtract, multiply and divide, and sometimes take square roots—and scientific calculators—which can do many other things, such as calculate factorials and trigonometry functions.

1. Scripted/Quick Reply BotsA scripted chatbot, as the name recommends, is one whose communication with an end client through a pre-characterized information base and specialized capacities that can appropriately react just to explicit guidelines. All things considered, the inquiries must be lined up with the language customized in the bot.2. NLP ChatbotsChatbots, when all is said in done, are considered perhaps the greatest use of Artificial Intelligence (AI). At its center, it uses an AI innovation Natural Language Processing (NLP) to plan client input (text or voice) to a goal. NLP chatbots characterize the messages and afterward, language parsing is done to find factors for a solution.3. Service/Action ChatbotsService chatbots request pertinent information from the client to finish their solicitation or make a particular move. This chatbot is intensely utilized in the aircraft business. It assists clients with checking flight booking, the cost of holding the flights, and checking the statuses also.4. Social Messaging ChatbotsThese chatbots are incorporated inside a social informing stage (Messenger, Telegram, Whatsapp, Slack, and so forth.), making it simple for clients to legitimately associate with the bot, much the same as they do with their companions.5. Context Enabled ChatbotsContextual chatbots are the most developed sort of conversational bots. They use Machine Learning and Artificial Intelligence to recollect discussions that occurred before, with explicit clients, to learn and develop after some time. These chatbots learn with their encounters with the client. Siri, Alexa, Google Assistant are a portion of the instances of relevant chatbots.6. Voice-Enabled ChatbotsVoice empowered chatbots like Alexa, Siri makes customized understanding for the clients. These chatbots acknowledge client inputs through voice, follow up on client requests, answer their inquiries, and perform various other tasks. Organizations can make their own voice-enabled chatbot by utilizing text-to-discourse (TTS) and voice acknowledgment APIs.

According to Wikipedia: A calculator is a machine that allows people to do math operations more efficiently. For example, many calculators will add, subtract, multiply, and divide. Some also calculate square roots, and more complex calculators can help with calculus and draw function graphs. Calculators are ubiquitous. Smartphones and other computers can also serve as a calculator.

Some calculators, such as the abacus, will work without requiring batteries. Others, like the electronic calculator, need batteries. There are two main types of electronic calculators: simple calculators—which can only add, subtract, multiply and divide, and sometimes take square roots—and scientific calculators—which can do many other things, such as calculate factorials and trigonometry functions.