19-07-2016, 02:25 PM
What is a motherboard?
It is on this board that is connected or welded the essential elements of the computer: (the chipset, the clock and the CMOS battery, the BIOS, the system bus and expansions slots). All the other computer parts are connected to the motherboard Sad the graphic card, the sound card, the RAM, the hard drive....). The motherboard is the center of activity. It is also responsible for managing the system buses that move data between the CPU and other parts inside the computer.
motherboard sockets and the CPU they can support
The motherboard socket determines the types of processor it can support. Some sockets are made for Intel processors, some for AMD processors. Independently of the sockets, all motherboards have integrated components like the chipset, PCI slots, BIOS, and more.
Mouse & keyboard:
Keyboard Connectors are two types basically. All PCs have a Key board port connected directly to the motherboard. The oldest, but still quite common type, is a special DIN, and most PCs until recently retained this style connector. The AT-style keyboard connector is quickly disappearing, being replaced by the smaller mini DIN PS/2-style keyboard connector. You can use an AT-style keyboard with a PS/2-style socket (or the other way around) by using a converter. Although the AT connector is unique in PCs, the PS/2-style mini-DIN is also used in more modern PCs for the mouse. Fortunately , most PCs that use the mini-DIN for both the keyboard and mouse clearly mark each mini-DIN socket as to its correct use. Some keyboards have a USB connection, but these are fairly rare compared to the PS/2 connection
USB (Universal serial bus):
USB is the General-purpose connection for PC. You can find USB versions of many different devices, such as mice, keyboards, scanners, cameras, and even printers. a USB connector's distinctive rectangular shape makes it easily recognizable. USB has a number of features that makes it particularly popular on PCs. First, USB devices are hot swappable. You can insert or remove them without restarting your system.
Reference: http://studentbank.in/report-motherboard...z4EqM0KljK
CONSISTENT OBJECT SHARING FOR EDGE SERVICES
Abstract: We present Quiver, a system that coordinates service proxies placed at the edge of the Internet to serve distributed clients accessing a service involving mutable objects. Quiver enables these proxies to perform consistent accesses to shared objects by migrating the objects to proxies performing operations on those objects. These migrations dramatically improve performance when operations involving an object exhibit geographic locality, since migrating this object into the vicinity of proxies hosting these operations will benefit all such operations. This system reduces the workload in the server. It performs the all operations in the proxies itself. In this system the operations performed in First-In-First-Out process. This system handles two process serializability and strict serializabilty for durability in the consistent object sharing . Other workloads benefit from Quiver, dispersing the computation load across the proxies and saving the costs of sending operation parameters over the wide area when these are large. Quiver also supports optimizations for single-object reads that do not involve migrating the object. We detail the protocols for implementing object operations and for accommodating the addition, involuntary disconnection, and voluntary departure of proxies. Finally, we discuss the use of Quiver to build an e-commerce application and a distributed network traffic modeling service.