123
64 bits
That depends on the memory architecture of the system.if the memory chips are byte wide and not used to create a multibyte bus, 11 address bits are needed.if the memory chips are 32 bits wide, 9 address bits are needed (with the CPU internally selecting which of the 4 bytes it will use).it the memory chips are 64 bits wide, 8 address bits are needed (with the CPU internally selecting which of the 8 bytes it will use.if the memory chips are 4 bits wide, 12 address bits will be needed and the CPU must perform 2 memory cycles per byte that it needs. (yes, I have seen a computer that worked this way!)etc.
8192
32 bits wide
ADATA produces a wide variety of memory-storage devices, such as RAM-modules, USB-flashdrives, solid state drives, memory cards and portable hard disks.
With a 20-bit address bus, a computer can address approximately 1,048,576 memory locations, which is equivalent to 1 megabyte of memory.
8 Bits Wide
32 bits wide
There are a wide variety of effective memory techniques. The most interesting memory technique is the use of pnemonic devices, which uses sounds to help you remember.
It depends on a type of microprocessor. The simplest microprocessors had memory word only four bits wide and they could have 15 bites of memory. I suppose that it was enough for some simple calculators.
For the Pentium the front side data bus is 64 bits wide. The back side is 32 bits wide.
The two types of ExpressCard modules are ExpressCard/34 and ExpressCard/54. ExpressCard/34 modules are smaller in size and use a 34mm wide slot, while ExpressCard/54 modules are larger and use a 54mm wide slot for greater compatibility.