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.
The term is applied to both random access memory access and to hard disk and CD-ROM access. For RAM access, IBM prefers the term cycle time. However, the use of access time for RAM access is common. Access time to RAM is usually measured in nanoseconds. Access time to a hard disk or CD-ROM is usually measured in milliseconds.