Read & write
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The document discusses read and write operations in computer memory. A write operation transfers the address and data to the memory lines and activates the write control line. A read operation transfers the address and activates the read control line. The memory enable line determines if a read or write occurs based on whether the read/write line is set to 0 or 1. Memory stores data in n-bit words that can be accessed using k address lines, with data input and output lines transferring data during write and read operations respectively.
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Read & write
- 1. Computer Architecture And Organization Topic : Read And Write Operation
- 2. Read/Write Operations The Write operation: Transfers the address of the desired word to the address lines. Transfers the data bits (the word) to be stored in memory to the data input lines. Activates the Write control line (set Read/Write to 0). The Read operation: Transfers the address of the desired word to the address lines. Activates the Read control line (set Read/Write to 1). Memory Enable Read/Write Memory Operation 0 X None 1 0 Write to selected word 1 1 Read from selected word
- 4. A memory unit stores binary information in groups of bits called words. The data consists of n lines (for n-bit words). Data input lines provide the information to be stored (written) into the memory, while data output lines carry the information out (read) from the memory. The address consists of k lines which specify which word (among the 2k words available) to be selected for reading or writing. The control lines Read and Write (usually combined into a single control line Read/Write) specifies the direction of transfer of the data.