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.
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 external data bus can be as wide as desired, given the necessary compromises between performance, complexity, and cost. The wider the bus, the faster the theoretical aggregate data transfer rate. In the 8085 and 8088, the external data bus is 8 bits wide; in the 8086, it is 16 bits wide; in the 80386, it is 32 bits wide; and in the modern incarnations of 64 bit processors, it is 64 bits wide.
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.