the ibm 370 mainframe computer was introduced in 1970. the 370 model 145 could hold up to 524,288 bytes of data (512 kbytes). it cost $1,783,000.00 to buy (or $37,330/month to rent). a notebook computer today holds 16 gbytes of memory and costs $2,500 to buy. if you assume that 100% of the price is just the memory, for both computers