Questions tagged [memory-hardware]

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6
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2answers
886 views

Why is word-addressable the exception, not the rule?

As stated on Wikipedia: Most modern computers are byte-addressable instead of word-addressable. Why is this case? Since the CPU processes words (of predominantly 64 bits or 8 bytes) now, wouldn't ...
2
votes
0answers
2k views

Will this address result in a cache hit or miss for these cache mapping functions?

The Problem: A CPU produces the following sequence of read addresses in hex.    Suppose the cache is empty to begin with and assuming an LRU replacement, determine whether each address ...
0
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0answers
85 views

Is this cache entry a hit or a miss? [duplicate]

The Problem: A CPU produces the following sequence of read addresses in hex. Suppose the cache is empty to begin with and assuming an LRU replacement, determine whether each address produces a hit or ...
31
votes
8answers
16k views

How does a computer determine the data type of a byte?

For example, if the computer has 10111100 stored on one particular byte of RAM, how does the computer know to interpret this byte as an integer, ASCII character, or ...
1
vote
2answers
372 views

How do Hard Drives Send and Recieve Data?

Ok. I know this is probably a commonly asked question. Before you refer me to a site or answer this yourself, I ask for you to please read this through. I have been into computers and electronics for ...
0
votes
2answers
312 views

Address bus and memory

If I have an address bus of 64K, i.e. it can access 64*1024 or 65536 locations, should I also have a memory chip with 65536 locations in it? What I'm trying to ask is that do all the 65536 locations ...
1
vote
3answers
309 views

How is a program stored before compiling?

When we write code, after compilation the code will be converted to machine language and then stored in the hard disk. But before compiling the code, it is still in the high-level language. How and ...
3
votes
6answers
2k views

How can a CPU access more memory locations than 2^wordsize?

I noticed that CPU's like the 8086 and especially the 8080 have the ability to access more memory than what one would normally assume. The 8080, for example, has an 8-bit word size but can use a 16-...