DS

  Whereas it's traveled 11.6 billion miles to interstellar space, Voyager 1's software isn't as high-tech as you may believe. In detail, it has less than 40 KB of recollection. To put that in viewpoint, your 16 GB iPhone 5 has about 240,000 times the recollection of a Voyager spacecraft. NASA developed Voyager in the 1970s in a pre-computer era when scientists had to rely solely on pencil, paper, chalkboards and their own mathematical abilities. While that appears unimaginable in a time when we contain decades' worth of computational power in our pouches, Voyager 1 is one of NASA's most thriving missions, and project researcher Edward Stone states he wouldn't have changed a thing. "It's astonishing it's continued as long as it has," pebble notifies Mashable. "I don't know how we could have done things much better than they were finished. I mean things do wear out, and we've had to swap to some of our backup schemes, but luckily we ...

Memory organization is depends on type of architecture used. There are two type of architectures are used in controller or processor generally : 1) Von Neumann architecture 2) Harvard architecture Von Neumann architecture The term Von Neumann architecture, also known as the Von Neumann model or the Princeton architecture. This  architecture consist of address memory and data memory on a single unit . 8085 is based on Von Neumann architecture. Harvard architecture Harvard architecture consist of program memory and data memory as separate unit. Thus for accessing Harvard architecture we need separate address bus, data bus and control bus.  8051  is based on Von Neumann architecture.  Hence 8051 consist of two separate memory units, program memory as well as data memory. Program memory organization : The program memory organization for 8051 family is as shown in fig. above. 8051 microcontroller has an on chip internal  program ROM  of 4K size and if ...