How Does a 32-bit Processor Read/Write Multiple Bits in Parallel Instead of Sequentially?

Hi guys, I'm a lil confused how PC/PROCESSOR can read/write 32bit altogether or number of bits can read them together at a time and not respectively?! can you guys please help me to imagine that? exactly what's confusion me how processor can read an amount of bits at a time and not respectively but in parallel.. ?! any help?!!

I'm not accepting the idea how can processor read at a time "number of bits" ?! and not bit by bit one after the other?!

Hi Ryan -- you might want to check the first part of a series of articles I'm writing on Designing a 4-Bit Computer from the Ground Up.There are lots of ways in which we might build a processor. A very common approach is to use what is known as a von Neumann architecture. The idea is that the processor talks to a memory that can contain both instructions and data. The basic unit of data that we use to store, represent, and manipulate data inside a computer is called a bit (binary digit). A bit can represent two values, 0 or 1.When we talk about the "width" of a memory, we are referring to the size (width) of the words it stores in terms of bits. For example, an 8-bit word consists of 8 bits. When we talk about the "depth" of a memory, we are referring to the number of words it contains.
In the context of computers, the term "bus" refers to a group of signals that perform a common function. The processor has an address bus that it uses to point to the locations in the memory, and a data bus that it uses to convey words of data back and forth between the processor and the memory (and input/output ports).
The early microprocessors were said to be 8-bit machines because they had an 8-bit data bus and the words in the memory were 8-bits wide. Later processors had 16-bit data busses, then 32-bits, then 64-bits, and so forth.If we have an 8-bit processor, then in the same way that the words in
the memory are 8-bits wide, the registers used to store and manipulate
data inside the processor will typically be 8 bits wide.The easiest way to think of this is to visualize a processor with an 8-bit data bus. Each bit has it's own pin on the processor and its own wire linking the processor to the memory. So we have a bus of 8 wires -- one end of the bus is connected to 8 pins on the processor -- the other end of the bus is connected to 8 pins on the memory. This allows the processor to read all 8 bits in or write all 8 bits out simultaneously; i.e., in parallel.
An alternative way of reading data in and out of the processor is serially using a single pin. In the case of a UART interface (most processors support one or more of these), we typically use two pins -- one to transmit data and the other to receive data.Historically, in some cases where the size of the package and the number of pins was a concern, but where speed was not an issue, the designers implemented all communication between the processor, the memory, and peripheral devices in serial. A good example of this was a family of simple processors used in cash registers back in the 1970s and 1980s.I hope this helps -- make sure to read the article mentioned at the top of this comment -- Max

Hi Ryan I think you are asking good questions, and it is difficult for you and many others to get to grips with these fundamentals of computing logic. It's also very difficult for experts to remember how they trained their minds to grasp the principles of how these things work. The child (Girl or Boy) grow up seeing the world in mostly serial terms with one action following another, so it is difficult to grasp parallel actions. A lot of our early interaction with machines and technology take place also in a perceived serial manner. Probably my first encounter with parallel processing was when I stripped my first 4 cylinder petrol engine when I was 14 years old. The pistons go up and down in a sequence, but all the pistons and valves move in a predictable and fixed sequence at the same time throughout the firing cycle of the 4 cylinders. I like to think of this as parallel processing through a sequential set of time intervals.How does this relate to computingI tend to think of computing and digital logic as pattern matching machines. In the computers I use, the computer has a number of predefined patterns which code for it to do different but simple logic operations, (this was my break through moment, when I understood these computers have predefined simple tasks that are activated when it reads the data bits in the memory you code). As Max says, in 8bit wide data  you will get 256 possible actions that the logic can take inside the computer. So in simple terms my computer asks for the first instruction you have written in the code and matches the pattern in your data against the 256 8bit possible actions it has available to it in the computers simple logic operations. Does this help?

A processor can read 32 bits at the same time, because the 32 bits are on 32 separate wires. The 32 wires lie side-by-side, physically parallel with each other, hence the term "parallel data bus".

There are various ways by that it can be done and it also totally depends on the user that how the user is going to use the processor. There are different types of processor and they are for any purpose as well. Like for heavy graphics, a different processor is required. 
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