Concrete retaining wall prices start around $30 per square foot including materials and installation and can go as high as $45 to $50 per square foot depending on how much prep work is involved in building the forms. Walls higher than four feet typically require a different type of form which will raise the cost.
Random-access memory (RAM /rÃ¦m/) is a form of computer data storage. A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory.
There are two key operations on memory: fetch( address ) returns value without changing the value stored at that address. store( address, value ) writes new value into the cell at the given address. This type of memory is random-access, meaning that CPU can access any value of the array at any time (vs. sequential access, like on a tape). Such memories are called RAM (random-access memory.) Some memory is non-volatile, or read-only (ROM or read-only memory.)