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Conventional

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Q: What memory type has logical memory allocation of 0 to 640 KB?
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Why is the conventional has logical memory allocation of 0 to 640 KB?

The original 1981 IBM PC used an Intel 8088 CPU which had an address space of 1 megabyte. The lower 640KB of the address space (a huge amount for the day) was dedicated to RAM and the rest was dedicated to ROM and graphics memory. The ROM contained BIOS for booting and simple device drivers, and a BASIC interpreter. Intel x86 CPUs from the 286 onward have had much larger address spaces, but for backward compatibility they all have hardware modes where they can pretend to be an 8086, with its 1MB limitation.


Which operating system eliminated the 640 KB memory limit?

Windows 95.


What is conventional memory in PC?

Conventional memory refers to the memory reserved to run DOS programs in a computer system. DOS only uses the first 640 kb of memory in a PC.


What is 638 rounded to the nearest ten?

640


What is 638 rounded to the nearest 10?

640


What is 643 rounded to nearest ten?

640


What is 60 percent of 640?

60% of 640= 60% * 640= 0.6 * 640= 384


What is 637 rounded to nearest ten?

640


What is thirty percent of 640?

30% of 640 = 30% * 640 = 0.3 * 640 = 192


What is 75 percent of 640?

75% of 640= 75% * 640= 0.75 * 640= 480


What is 48 percent of 640?

48% of 640 = 48% * 640 = 0.48 * 640 = 307.2


What is 110 percent of 640?

110% of 640= 110% * 640= 1.1 * 640= 704