bytes and more bytes

I ran across this fun fact earlier today.  In a 1981 press release, announcing their personal computer, IBM offered 64,000 bytes (64 kilobytes) of memory available in the "typical system for home and school."  The system was for sale for a mere $3,005.00.  I'm happy to know that the price of PCs has gone down.  In a 'Target' ad that came in this morning's paper I found a laptop computer available for $299.99.  It has 1 TB of storage.  If my quick math is accurate, you can check me on this, 1 TB is equal to 1,073,741,824 kilobytes.  Isn't that amazing?  My little tablet used 267 MBs last week while my phone used 12.37 MBs in the same week.  I Googled this and one MB equals 1024 KBs. When my husband taught Statistics at St. Francis in the early 70's the computer his class used took up most of a room.  Does anyone but me remember punch cards used in programing?  I came across a box of those in my basement when I downsized three years ago.  I also dealt with 8 PCs that had somehow made their way to his "man cave" over the years.  Then there were the three 'antique' laptops.  Now that I think about it, the laptop I'm typing this blog on is getting rather elderly in computer years. But I'm not ready to start my own collection so I think I'll keep it for a while longer.