Yanuar Tri Aditya Nugraha
yanuar@student.chalmers.se
misconceptions
misconceptions
faulty thinking
misconceptions
latar belakang
computer is everywhere
from 4.2 billions allocated address...
it is getting big and bigger...
human population is ~7 billions
permasalahan
users tend to USE, but computer is a friend
get to know each other
failed to understand them
poor troubleshooting
degrading performance
brokenhearted-computer
misconceptions
definisi
a piece of digital device
that is designed
to solve
{
}
problems
types of computer
misconceptions
more GHz, the faster it is
megabyte = megabit
CPU adalah keseluruhan 'komputer'
RAM penuh = bahaya
CPU selalu jadi kambing hitam
more GHz, the faster it is
CPU adalah keseluruhan 'komputer'
CPU is not the entire computer
CPU is central processing unit
arithmetic
does the calculations
CPU can be found on almost everywhere
smartphones
digital cameras
smartwatches
router/wi-fi
computer is a hierarchycal system
it contributes to the speed of the system
e.g. a 3.0 GHz processor
it does 3 billion cycles per second
efficiency of the processor is somewhat, hidden
IPC or instructions per cycle
analogy: running man
example
adding two numbers
load
exec
store
2 cycles
4 cycles
2 cycles
total of 8 cycles
just for adding two numbers
for 1 instructions
IPC
=81=0.125
= \frac{1}{8} = 0.125
how to measure performance of CPU
load
exec
store
2 cycles
8 cycles
2 cycles
how to measure performance of CPU
load
exec
store
1 cycles
2 cycles
1 cycles
example
E=mc2
E = mc^2
IPC 0.083
IPC 0.25
GHz is just a measurement on...
2 cores @2.0 GHz does not mean that:
equals
faster
to 1 core @4.0 GHz
to 1 core @2.0 GHz
performance of a whole computer depends on:
memory hierarchy
OS overhead
misconceptions
more GHz, the faster it is
CPU adalah keseluruhan 'komputer'
RAM penuh = bahaya
CPU selalu jadi kambing hitam
megabyte = megabit
megabyte = megabit
RAM penuh = bahaya
the theory of bits and byte
about 'bit'
it represents the state, '1' or '0'
28=256
2^8 = 256
there are
combinations
the theory of bits and byte
about 'byte'
it represents smallest usable part of memory
byte
how bits can represent data?
analog
sampling
discrete
RAM is full = bad state
on search of IKEA bokhylla
RAM is full = bad state
misconceptions
more GHz, the faster it is
megabyte = megabit
CPU adalah keseluruhan 'komputer'
RAM penuh = bahaya
CPU selalu jadi kambing hitam
CPU selalu jadi kambing hitam
Computer is a highly dependable system
know what is the
BOTTLENECK
of your system
slow storage is usually the culprit
anything with mechanical parts
slows computer down
=
solution?
misconceptions
more GHz, the faster it is
megabyte adalah megabit, versi keren
CPU adalah keseluruhan 'komputer'
RAM penuh = bahaya
CPU selalu jadi kambing hitam
list is still growing tho....
======================
thanks a lot
ve your computer(s)
l
Yanuar Tri Aditya Nugraha yanuar@student.chalmers.se
understanding tech specs
By Yanuar Tri Aditya Nugraha
understanding tech specs
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