Chapter 6 summary
Chapter 6 basically describes the components of laptops, and compares them with those of a desktop computers, it talks about the uses of smartphones and PDAs (Personal Digital Assistants) and what features are common in them. For example: in Laptops, some features are the screen integrated inside the lid, and the keyboard integrated inside the base. For PDAs, you can play games, surf the internet, and instant messaging, and smartphones are cell phones that can do everything that a PDA can do.
Also, in 6.1, it talks about different uses for laptops. It emphasises that the most important things about its appearance are its size ,portablilty and the fact that it doesn’t always need to be plugged into an AC power source, as it has a rechargable battery in its base.
A PDA has an address book, a calculator, an alarm clock, Internet access, E-mail, and global positioning. A smartphone can do all of these things, but also has a built-in camera, document access, abbreviated note-taking and television.
In 6.2, it examines docking stations and port replicators. from 6.2.1 to 6.3, it covers all of the components and LED lights on the inside, the top, the sides, and the base of laptops and docking stations. Somecomponents on the outside of a laptop are a parallel port, an AC power connector, and a battery bay. Some on the inside are a keyboard, a touchpad, a fingerprint reader and a power button. Some LEDs are bluetooth, wireless, number lock and caps lock. Some components found on the docking st
This is a laptop RAM. It shorter and wider than a standard desktop RAM
ation are the Power Button, the eject button and the docking connector. Some cables that can plug into the docking station are Parallel, USB, Ethernet, Video and Audio.
6.3 is about comparing and contrasting different components of that of a laptop, and those of a desktop computer. Laptop and desktops have different shaped motherboards. The form factor of a laptop motherboard is Propietry,whereas desktop computers have ATX, BTX, LPX, AT, and NLX. The expansion slot on a laptop is a Mini-PCI, whereas an expansion slot on a desktop computer can be PCI, PCIe, ISA, and AGP. Finally, the laptop’s RAM slot is SODIMM, whereas a desktop computer can have SIMM, RIMM, and DIMM.
Laptop CPUs don’t use as much power as desktop computers, and so they produce less heat. This means that they don’t need as big a fan as a desktop computer. Because there is not as much power, it does lead to a slight performance decrease. However, the less power is, the longer the other components will live, so effectively, the laptop willkeep working longer than a desktop computer, assuming that you do not replace any components.
Power management controls the flow of electricity to the components of a computer. Desktop computers are always plugged into an AC power source, whereas laptops are small and portable, and have rechargable batteries and can run on their own, until they need to be recharged. The two methods of Power Management are Advanced power management (APM), and Advanced Configuration and Power interface (ACPI). APM is the earliest version of power management. The BIOS is used to control this. ACPI is the newer one. It has more power management features. It is run by the OS.
These external components can be used on both desktop computers and laptops: External drives, modems, network cards, wireless adapters, printers and other peripherals. USB and Firewire ports can be used to connect Printers, scanners, FDDs, Mice, Cameras, keyboards, HDDs, flash drives, optical drives and MP3 players. Desktop computers have enough space to allow 3.5 inch and 5.5 inch drives into it, but Laptops have limited space because they are designed to be small, that many different kinds of drives can fit into one bay.
In 6.4, it talks about configuring laptops and how you do it. The power management states are:
- S0 – the computer is on and the CPU is running
- S1 – the computer is not running, but the CPU and RAM are still getting power.
- S2 – the CPU is off, but the RAM is still refreshed. This is a lower mode of S1.
- S3 – the CPU is off, and the RAM is on a low refresh rate.
- S4 – the CPU and RAM are off. The contents of the RAM are saved to a temporary file on the HDD.
- S5 – The computer is off and nothing has been saved.
Laptop batteries at the moment can last about 2-10 hours before they need to be recharged. You use power management so that you can use this power efficiently. The most important components to replace in a laptop are the battery, optical drive, hard drive, memory, and PC cards. In 6.4, it tells you in detail just how to replace them. On some laptops though, PC cards, optical drives and USB devices are hot-swappable.
6.5 describes and compares different mobile phone standards. There are 5 different generations of phone so far, and they are 1G, 2G, 2.5G, 3G, and the latest one, 4G. Currently, 1Gs are used in Saudi Arabia, Scandinavia, USA and New Zealand. These are the oldest phones. 2Gs are used mostly worldwide. 2.5Gs are also used mostly worldwide. 3G phones are fairly new to the market, however, they are sold worldwide. 4G are the newest generation of phone and are sold worldwide.
6.6 covers the two topics: Identify cleaning procedures and identify optimal operating environments. To clean the keyboard, you must:
- Turn off the laptop
- Disconnect all devices
- Disconnect laptop from power
- Remove all batteries
- Wipe the laptop with clean lint-free cloth
For cleaning the ventilation, you must do steps 1-4, and then use compressed air to clean out the dust and use tweezers to remove any debris.
For cleaning LCDs, do exactly the same as if you were cleaning a keyboard. These are just three of the components this chapter describes how to clean.
The best conditions to keep your laptop are from 10 – 80% humidity and 45 – 90 degrees Fahrenheit. An ideal place to keep your laptop would be a place which is clean, and which won’t get contaminated. Places like an office desk, or a smooth table. When transporting and shipping laptops, use either a padded laptop bag or an approved computer bag.
6.7 is about troubleshooting. It covers two topics: Reviewing the troubleshooting process and identify the common problems and solutions.
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Looking good – well done.
Good work here Harry, focus now on the revision questions to really hit the Chapter 6 assessment in the high numbers!
Well done cheese, nice one
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