Give the details of buses available on the motherboard used.
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Control Bus
The motherboard's control bus manages the activity in the system. The control bus, like the other buses, is simply a set of connections among the parts in the computer. All parts "agree to recognize" that if one connection carries a voltage and the next one does not, it means that the central processor reads from memory. If the connections reverse roles, the processor writes to memory. Other connections deal with the "chunking" of data 8, 16, 32 or 64 bits at a time. Still others determine if data is being shuttled to the central processor from memory or the keyboard. This signaling system prevents data from going to the wrong place.
Data Bus
The data bus acts as a conduit for data from the keyboard, memory and other devices. It passes information at speeds up to billions of characters per second. The central processor reads the data, performs calculations, and moves new data back to memory, the hard drive and other locations. The control bus determines which direction the data is moving.
Address Bus
The computer must be able to access every character of memory rapidly, so every character has its own address number. The central processor specifies which addresses it wants to read or write and the address bus carries this information to a memory controller circuit, which locates and fetches the information. Some locations, called random-access memory, hold program instructions and temporary calculation results. Other locations point to the hard drive, mouse and keyboard. The control bus specifies which of these two sets of addresses become active for a particular memory operation.
The motherboard's control bus manages the activity in the system. The control bus, like the other buses, is simply a set of connections among the parts in the computer. All parts "agree to recognize" that if one connection carries a voltage and the next one does not, it means that the central processor reads from memory. If the connections reverse roles, the processor writes to memory. Other connections deal with the "chunking" of data 8, 16, 32 or 64 bits at a time. Still others determine if data is being shuttled to the central processor from memory or the keyboard. This signaling system prevents data from going to the wrong place.
Data Bus
The data bus acts as a conduit for data from the keyboard, memory and other devices. It passes information at speeds up to billions of characters per second. The central processor reads the data, performs calculations, and moves new data back to memory, the hard drive and other locations. The control bus determines which direction the data is moving.
Address Bus
The computer must be able to access every character of memory rapidly, so every character has its own address number. The central processor specifies which addresses it wants to read or write and the address bus carries this information to a memory controller circuit, which locates and fetches the information. Some locations, called random-access memory, hold program instructions and temporary calculation results. Other locations point to the hard drive, mouse and keyboard. The control bus specifies which of these two sets of addresses become active for a particular memory operation.
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There are 3 types of buses that comprises the architecture of an embedded system or the motherboard:
1. Control Bus: It manages all the activities going across the system. It provides the correct route to the signals and ensures the data is reached at the right location. It decides the data flow direction/
2. Data Bus: It transfers data entered through keyboard or extracted from the memory or from any other peripheral device.
3. Address Bus: In order to access any variable correctly and at a lightening speed the computer needs to know the correct address of the variables.
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