Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
3415
1
0
9 trang
Tham khảo tài liệu 'một số câu hỏi về máy tính', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả
Nội dung trích xuất từ tài liệu:
Một số câu hỏi về máy tính
1
Co m p uter system
Co m p uter Syste m
Book m p uter
I:co syste m funda m e ntals.
Chapter INTR O D U C TI O N O M P U T E R.
1: TO C
Q uestion . W h at co m p uter?
1 is a
A co m p uter m a y be defined as a m ac hine which accepts data from an input device,
processes it by performing arithmetical and logic operations in accordance with a
progra m instructions
of and returns the results through
an output unit.
A m p uter
co is basically an
electronic ac hine
m operating on current.
Q uestion . Co m p o n e nts a m p uter
2 of Co system?
A m p uter
co system m prises the
co of following m p o n e nts:
co
1. Central Processing
Unit (CP U).
- C P U heart the whole sys
is the of
2
- CP U consists the
of :
• control unit
(CU)
• arithmetic logic unit (ALU)
• accu m ulator (AC C)
• progra m counter
(PC)
• instruction register (IR)
• m e m ory address register(MA R)
• m e m ory data register (M D R)
• status register (SR)
• general purpose register
- The function each m p o n ents C P U:
of co of
• Control unit:
control and
co_ordinate
allhardware functions the S.
of C
exa mine and decode all progra m instructions to the
co m p uter and initiate their execution by sending the
appropriate signals.
• AL U:
performs all arithmetic and logic m p arision
co two values
functions required co m p uter.
by
• A C C:
holds the firstoperand the
of temporary resultof
the U.
AL
• P C:
contains the add the
of next instruction be
to excuted.
• IR:
contains the current instruction be
to executed.
M ain e m ory
m
• M A R:
holds the address location to or from which data is to be
transferred
• M D R:
contains the data to be written to or read out of the
addressed location.
• S R:
keeps track the
of status the
of accu m alator.
• G e neral Purpose Register:
for general purpose procedures.
Please refer to
diagra m lustratin of
for an il the basic m p o n ents the P U.
co of C
3
P U
C
I
N
Control unit
T
E Arithmetic
Logic Unit
R
Accu m ulator
N
A Progra m
Couter
to
L
m ain
Instruction Register
B
U m e m ory
S
...
