PC devices: system unit, monitor, keyboard, mouse. Keyboard prices Keyboard prices
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Keyboard prices
The main division of keyboards is based on the connection and the type of case. Classic wired keyboards can be connected via USB or PS/2. The first option is the most universal - the vast majority of computers have a USB port. At the same time, for stationary PCs with a separate PS/2 input, it makes sense to purchase a keyboard for it - this will free up an additional USB port for other peripherals.
Wireless connection can be made via radio or Bluetooth. The first option is suitable for any devices with USB port- such keyboards are equipped with a corresponding adapter. The second is optimal for portable equipment equipped Bluetooth module, for example laptops and tablets: in this case, an adapter is not required at all.
Keyboards can be produced in full-size, compact or Num-cases. The first option is designed for cases where dimensions are not critical - primarily for desktop PCs. Such keyboards have both a basic set of keys and a separate number pad.
Compact models do not have a digital block, which makes it possible to reduce the size. They are quite suitable for most tasks, but are still less functional than full-size ones. Therefore, it is worth specifically looking for such a keyboard when compactness is crucial - for example, in addition to a laptop for traveling.
The Num keyboard is actually a separate number pad without the other keys. Such models are designed for cases where you need to constantly use a Num block (for example, for calculations on a calculator), but the existing equipment does not have it. It can be useful as an addition to a compact keyboard or laptop.
Separately, we can highlight specialized keyboards for tablets. They are made compact, and can be equipped with special mounts and act as a stand. When purchasing such a keyboard, you need to check its compatibility with a specific tablet.
There are gaming keyboards, intended for fans of video games (including those that are not intended for any other use). Another specialization is multimedia: such models have separate player control keys and can play the role of a remote control, especially when wireless connection. And for those who have to work a lot with typing, models of “ergonomic” design may be useful - they reduce fatigue. Also, keyboards with low key travel are considered optimal for fast typing.
Manufacturers have even taken care of those who like to drink tea or coffee at the computer: they produce keyboards with moisture protection that can withstand liquid spills without consequences.
The computers we are used to look the same: large case, monitor, keyboard and mouse. All these components take up quite a lot of space, are not particularly mobile and consume a large amount of energy. Hong Kong company Acute angle decided to change this stereotype. Its engineers have separated all the key computer modules from the case and placed them inside a compact keyboard that you can take with you anywhere.
The resulting K2 minicomputer includes a motherboard PCB, Intel processor, video core, up to 8 GB RAM, hard drive with a capacity of up to 128 GB and many necessary ports. Moreover, the most advanced (and heaviest) model weighs only 450 grams.
In addition to being extremely compact and portable, a computer keyboard offers users incredible low level energy consumption. For example, the K2 model consumes only 10 watts of electricity versus 60-80 for the average desktop computer. Thanks to this, all Acute angle models require virtually no cooler and can be assembled without a single cooler.
K2 supports Windows 10 Home OS. Opportunities even basic models minicomputers will be sufficient for most everyday tasks. Among them: creating presentations, working with by email And office packages, games, online shopping, music and video.
A few days ago, Acute angle launched a funding campaign on Kickstarter and almost instantly raised the required amount of HK$100,000. Thanks to this, the first K2s will go to their owners in October this year. Their price will be about 14,000 rubles with worldwide delivery.
Personal computer is complex electronic device, designed to perform wide range tasks. This could be various calculations, calculations, listening to music, watching videos, various office tasks, games and much more.
Personal computer can be stationary or mobile. TO mobile computers include laptops, netbooks and tablets.
A desktop computer is also lately has undergone changes, but in most cases represents system unit, monitor, input devices (keyboard and mouse), audio devices (speakers, headphones and microphone), and others peripherals(printer, scanner, etc.).
For normal functioning personal computer All you need is a system unit, monitor, keyboard and mouse.
Also necessary operating system, in most cases they use Windows, but you can also download Linux.
Next we will take a closer look at each of these devices.
System unit
Main node personal computer is the system unit. It represents frame, most often a metal vertical box, on the front panel of which there are power buttons and disk drives. All the necessary connectors and cables are located on the back wall. The system unit consists of a power supply, a motherboard (also known as a motherboard or “motherboard”), hard drive(HDD), video card, processor (CPU), random access memory (RAM), drives (CD/DVD), sound card and network card. Often, network and sound cards are integrated into the motherboard, that is, the radio elements of the board are soldered directly to motherboard.
power unit
The power supply is made in the form of a separate box, which is located at the top rear of the system unit and has several power cables for all elements of the system unit.
power unit
Motherboard
The motherboard is the largest printed circuit board in the system unit, on which all the main components of the computer are installed (CPU, RAM, video card), it also has connectors for connecting hard disk and drives, as well as cables of USB ports and connectors going to back panel housings. The motherboard coordinates the operation of all computer devices.
Motherboard
CPU
The processor is a chip designed to perform basic computing operations. Processors are produced by two companies: AMD and Intel. Depending on the manufacturer of the processor, the connector (location of its installation) also differs, so when choosing a motherboard you should not forget this. You just won't insert AMD processor into the motherboard for Intel processors.
CPU
Video card
A video card is a separate printed circuit board installed in the PCI Express slot of the motherboard and is designed to display images on a monitor screen. It processes the received information and converts it into analog and digital video signals, which are supplied to the monitor via a cable connector. A video card usually contains a processor (GPU) and RAM.
Video card
RAM
RAM is one or more small cards installed in special sockets on the motherboard (DDR). RAM provides temporary storage of intermediate data while the computer is running. RAM is characterized by access speed and memory capacity. To date, the most fast memory has DDR3 standard.
RAM
Hard drive
A hard drive is a permanent storage of data; it can be user data, system data or temporary data. The hard drive stores the operating system, without which normal operation of the computer would be impossible. The operating system can also use hard drive to save the contents of RAM (for example, in hibernation mode). It is a closed metal parallelepiped hard drive that is connected to the motherboard via a connector (SATA).
Hard drive
Drive
Drive optical disks It looks like a hard drive, but has a retractable tray on the front panel for installing optical drives. Serves as a drive for reading and writing optical discs.
On system board Others can be installed additional devices, such as a Wi-Fi module or TV tuner.
Monitor
The computer monitor is used to graphical representation information that is certainly understandable to the PC user. Recently, exclusively liquid crystal displays (LCDs) have been produced. Monitors can be equipped with digital and/or analog video connectors (DVI, HDMI).
Keyboard
The keyboard is an integral input device of any computer. The keyboard consists of groups of keys for entering symbolic information. Also, many modern keyboards are equipped additional keys, for example, to control media players and various programs.
