Is bus short for something?
The word bus is short for omnibus, which means “for everyone.” Bus was first used in this sense in the 1830s, its “everyone” meaning referencing the fact that anyone could join the coach along its route, unlike with stagecoaches, which had to be pre-booked.
What type of vehicle is a bus?
Bus, any of a class of large, self-propelled, wheeled vehicles that are designed to carry passengers, generally on a fixed route. They were developed at the beginning of the 20th century to compete with streetcars by providing greater route flexibility. The bus was a natural outgrowth of the horse-driven coach.
How would you describe a bus?
A bus is a large wheeled vehicle meant to carry many passengers along with the driver. It is larger than a car. The name is a shortened version of omnibus, which means “for everyone” in Latin. Buses used to be called omnibuses, but people now simply call them “buses”.
Why is a bus used?
A bus is a subsystem that is used to connect computer components and transfer data between them. For example, an internal bus connects computer internals to the motherboard. A bus may be parallel or serial. Parallel buses transmit data across multiple wires.
What is bus speed?
Bus speed usually refers to the speed of the front side bus (FSB), which connects the CPU to the northbridge. FSB speeds can range from 66 MHz to over 800 MHz. Since the CPU reaches the memory controller though the northbridge, FSB speed can dramatically affect a computer’s performance.
What is purpose of address bus?
The sole purpose of an address bus is to identify the address of the location in cache or main memory that is to be read from or written to. Each location in memory will have its own unique address, this is known as addressability.
What is a bus signal?
(1) A bus is a network topology or circuit arrangement in which all devices are attached to a line directly and all signals pass through each of the devices. Each device has a unique identity and can recognize those signals intended for it.
What is bus protocol?
The essence of any bus is the set of rules by which data moves between devices. This set of rules is called a “protocol.” This chapter describes the basic protocol that controls the transfer of data between devices on a PCI bus.
What is bus and memory transfer?
Bus and Memory Transfers. A digital system composed of many registers, and paths must be provided to transfer information from one register to another. A bus consists of a set of common lines, one for each bit of register, through which binary information is transferred one at a time.
What is bus on the motherboard?
Buses are circuits on the motherboard that connect the CPU to other components. There are many buses on the motherboard. A bus moves instructions and data around the system. The speed of a bus is measured in megahertz (MHz).
How do I know what bus is on my motherboard?
Locate the model number of your computer’s motherboard and search for the manufacturer and model number on the Internet. Detailed specs of the motherboard should include the front-side bus speed, measured in MHz. You can find the memory bus speed, as well.
Why is a bus called a bus?
A quick look at wikipedia, and we learned that the word ‘bus’ is the shortened form of the Latin word ‘omnibus’. “Omnes Omnibus” was a pun on the Latin sounding name of that hatter Omnès: omnes meaning “all” and omnibus means “for all” in Latin. Nantes citizens soon gave the nickname of Omnibus to the vehicle.
What is bus transfer?
In computer architecture, a bus (a contraction of the Latin omnibus, and historically also called data highway) is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.)
How long is a transfer good for?
You can transfer for free between local bus routes and local buses and subways. (The transfer gets encoded on your MetroCard. You’ll swipe it again, but you won’t be charged.) Transfers are good within two hours of when you paid the fare.
What is memory transfer?
Memory Transfer The transfer of information from a memory word to the outside environment is called a read operation. The transfer of new information to be stored into the memory is called a write operation.
How many multiplexers are there in the bus?
If there are 8 registers of 16 bits each, then we need 16 multiplexers, each of which is an 8 : 1 multiplexer to create the 16 bit data bus.
What is three state bus buffer?
Definition: A three state bus buffer is an integrated circuit that connects multiple data sources to a single bus. The open drivers can be selected to be either a logical high, a logical low, or high impedance which allows other buffers to drive the bus. The third state behaves like an open circuit.
What is demultiplexer?
The demultiplexer is a combinational logic circuit designed to switch one common input line to one of several seperate output line. The data distributor, known more commonly as a Demultiplexer or “Demux” for short, is the exact opposite of the Multiplexer we saw in the previous tutorial.
What are select lines?
select lines, which are used to select which input line to send to the output. Conversely, a demultiplexer (or demux) is a device taking a single input and selecting signals of the output of the compatible mux, which is connected to the single input, and a shared selection line.