#RAM & Chip questions
14-May-94 01:11:11
Sb: #145299-#RAM & Chip questions
Fm: Ronald B. Romine 70322,1525
To: Vicki Jacobs 72147,2333
VJ >>How does one determine how much RAM is in on of these SIMMS?<<
If they are 8-bit (or 9-bit) SIMMs:
A 256×8 SIMM, would be 256 kilobits x 8 bits = 256K per SIMM
A 512×8 SIMM, would be 512 kilobits x 8 bits = 512K per SIMM
A 1×8 SIMM, would be 1024 kilobits x 8 bits = 1024K (1 meg) per SIMM
A 4×8 SIMM, would be 4096 kilobits x 8 bits = 4096K (4 meg) per SIMM.
If they are 32-bit (or 36-bit) SIMMs, they will be 72-pin SIMMs:
A 256×32 SIMM, would be 256 kbits x 32 bits = 1024K (1-meg) per SIMM
A 512×32 SIMM, would be 512 kbits x 32 bits = 2048K (2-meg) per SIMM
A 1×32 SIMM, would be 1024 kbits x 32 bits = 4096K (4-meg) per SIMM
A 4×32 SIMM, would be 4096 kbits x 32 bits = 16384K (16-meg) per SIMM.
A Zorro-II card would use the 8-bit SIMMs. A CPU-card, depending on
design would use either the 8-bit, or the 32-bit SIMMs.
—
JV >>at typing AVAIL. For chip it lists 1047552. How does that number
translate to K?<<
AVAIL, displays the number of BYTES. If you divide by 1024, you will be
given the approximate number in Kilobytes. Divide again by 1024, to get
the approximate number of Megabytes.
8 bits = 1 byte
1024 bytes = 1 Kilobyte
1024 kilobytes = 1 Megabyte
1024 megabytes = 1 Gigabyte
Its a metric system based on 8 & 1024, instead of 10 & 1000.
Ron.
– ap'ing with AP. (Eagles may fly, but weasels aren't sucked
into jet engines.)