Hot answers tagged

5

The exponent is unsigned. It cannot be -1. The smallest it can be is 0, which translates to 2^-127. You might ask then, "If so, how is 2^-128 represented in single precision?!". The answer lies in normalization. Usually numbers are normalized (i.e. multiplied by a power of 2) so that the leading bit of their mantissa is 1. That bit can then be ...


3

You're mixing things up a bit. You've kind of got the gist of it but not completely. Let's compare General Purpose Microprocessors, Microcontrollers, FPGAs, and ASICs. You've lumped microcontrollers and microprocessors together, when you really shouldn't. General Purpose Microprocessors: These are the desktop and laptop processors, Intel Pentium chips, AMD ...


2

how do these purely theoretical models of computation relate to real-world computer architecture? They don't. Both λ-calculus and Turing Machines were designed to model the way a human computes. They weren't designed to model computing machines. This is most obvious in the Turing Machine, which was heavily modeled after the way a "computer" ...


1

How many bits of address is required (for the program counter for example) in a byte-addressed computer with 512 Mbyte RAM? There is no answer. For modern systems software uses virtual memory, and virtual memory has nothing to do with physical memory. For example, you might have 512 MiB of RAM, 1.5 GiB of swap space, and 2 GiB of memory mapped files. ...


1

No, nobody has won. We as a species we have failed to standardize the order in which we store our bytes, along with the direction we write and the side of the street we drive on. As a consequence, anyone who wants to transfer data between two different systems over a network or in a file, has only about a 50% chance of the reasonable initial version of ...



Only top voted, non community-wiki answers of a minimum length are eligible