Chapter 1 Introduction
1. (a) 4
(b) 4
(c) 4
(d) 1048 576, 220
(e) 1024K
(f) 1073 741 824, 230
(g) 1 048 576K
(h) 1024M
(i) 8388608, 8192K
2. 1 million pages
3. (a) 589824 bytes
(b) 576 bytes
4. Data bus is bidirectional, address is unidirectional.
5. PC (Program Counter)
6. ALU
7. Address, control and data
8. EAstands forExternalAccess.WhenEAis 0, itwill access the externalmemory.
9. ALE is being usedwhen the external accessmode is being activated, i.e.EA=0. If aROM
is being accessed, a read operation will be needed, so PSEN is used to activate the ROM
andALEis usedtoactivate the address latchinorder tolet the address get into theROM.
