Microprocessors in the Home, School, Car, and More PDF

**G4 1.2 , 1.3** **Microprocessors in the home** TV Microprocessors let us pause programmes or record them to watch later. TVs have remote controls to change channels and adjust the volume. You can control some TVs with your voice. These functions are controlled by microprocessors. Washing m...

**G4 1.2 , 1.3** **Microprocessors in the home** TV Microprocessors let us pause programmes or record them to watch later. TVs have remote controls to change channels and adjust the volume. You can control some TVs with your voice. These functions are controlled by microprocessors. Washing machine Microprocessors make sure you can wash your clothes without damaging them.They control the amount of time that the clothes are washed. They also control the speed of the spin dryer. Fridge Sometimes, a device with a microprocessor is also connected to the internet. A device which is connected to the internet is a **smart device.** A smart refrigerator warns us if food is out of date. You can check what is in your smart refrigerator using your smartphone while you are at the supermarket. Home systems Microprocessors are used in home alarm and heating systems. Sensors can be installed in rooms to detect movement. A microprocessor uses information from the sensors to sound an alarm or turn on lights and heating when someone enters a room **Microprocessors in the car** A modern car can have as many as 60 **embedded microprocessors.** Each microprocessor does a special job. For example, one microprocessor will manage how the car uses fuel. Another will operate the car radio. Microprocessors make cars: easier to drive, for example, satellite navigation helps drivers get to where they want to go more comfortable for passengers, for example, the temperature in the car is kept at the right level safer, for example, brakes can be applied if the car gets too close to another vehicle. **Doctors** Doctors diagnose illness using machines that contain microprocessors.Two important machines are magnetic resonance imaging (MRI) and computerised axial tomography (CAT) scanners. MRI and CAT scanners create a 3D picture of the inside of a patient. A doctor can use the picture to see problems. Technology also helps patients to recover after treatment. Patient monitoring systems check blood pressure, temperature and pulse rate. Nurses get an early warning if a patient needs attention. Being a doctor is a complex job. There is a lot to know about many illnesses. Doctors use the internet for research.They also use the internet to contact experts. Sometimes those experts work in another country. **Manufacturing** A modern car factory is full of technology. Robots are used to assemble cars. A car is moved automatically from one part of the factory to another. At each stop, robots complete work on part of the car. Robots do work that used to be done by humans. Robots are used to manufacture many other goods.They are used for simple repetitive jobs. Robots are also used to do jobs that are dangerous for humans. For example, the police use robots to investigate packages that might contain explosives. **Retail** Supermarkets and other large shops depend on technology. At the supermarket checkout, goods are scanned using a barcode reader.This creates a detailed receipt for the customer. Information gathered at the checkout is used by the supermarket to decide what items they need to order from their suppliers. Customers pay for their shopping using debit and credit cards. Money is transferred automatically from the customer to the shop. Many people now use the internet to do their shopping. Orders made on the internet are processed quickly by computer systems. Goods are often delivered on the day after an order is made. Some people worry about the effect internet shopping has on shops in town centres.