Overview of Information Technology

for the manager

The IDC, Herzliya

The fundamentals

5V

0V

0 1 1 1 0 0 0 0 1 1 0 0

Clock

Value

the bit (b) 1 or 0 Aka (+ or -) or (Y or N)….

the BYTE (B) 1 0 0 1 0 0 1 0

The pace of the clock is measured in Hertz KHertz

The fundamentals

the BYTE (B) 1 0 0 1 0 0 1 1 A Byte values: from 0 to 255 or from 0 to 127 with parity

128 + 16 + 2+1 = 147

A Byte can represent:

all the Digits: 0 , 1 , 2 , ………, 9

all the Characters a, b, c, …….., y, z

even upper case A, B, C, ……., Y, Z

a second Alphabet א,ב ,ג ש, ת ,..……

punctuation: . , ; ! ( ) “

Control Signs ^Z ^X ^C ^Y

The fundamentals

We need a lot of Bytes…… Kbytes 1024 Mbytes ~1,000,000 GB ~1,000,000,000 TB PB

We need to transfer them fast 9600 Kb/sec Kb/sec Mb/sec Gb/sec

The fundamentals

We can do graphical design with digits…..

0 0 0 0 0 0 0 1 1 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 1 1 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0

And add colors…..

8 bits per pixel = 256 colors

16 bits per pixel = 65,536 colors

32bits per pixel ~ 4,000,000,000 colors

The fundamentals - Hardware

0 0 0 0 0 0 0 1 1 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 1 1 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0

1 0 0 1 0 0 1 1

0 0 0 1 0 0 1 0 + = 1 0 1 0 0 1 0 1

CPU Memory Logic, Logic and Logic

1 AND 1 -> 1

1 AND 0 -> 0

NOT 1 -> 0

1 OR 0 -> 1

The Accumulator

I/O input Output Keyboard Screen Mouse …….

Storage Hard Drive Optical Drive SSD DOK

Network/ Communication Internal Bus Ethernet USB, Bluetooth

The Command

ADD c, a, b

1 1 1 0 0 1 0 1

The fundamentals - Layers

HARDWARE IBM, HP, Dell, SAMSUNG, Apple, LENOVO, INTEL

Operating System Windows, UNIX (Linux, Ubuntu…), MacOS, Android, IOS, Z-OS

Virtualization

I/O GUI UX

Applications

Communication &

Networking RS232c TCP/IP

FTP AppleTalk

SNA GSM

WiFi 802.11

Storage &

File System &

Databases NTFS

ORACLE, DB2, MySQL MSSQL, MongoDB

The fundamentals - HW

The fundamentals – File System

……

…

…

Y File 1 17 40 52

Blocks Allocation Map

Physical Hard Drive

Y/N Fname Blocks

Y File 2 123 124 125 222 60

The Fundamentals - Database

DoB Add. Tel Name EmpID

Title % FTE Start Rate Project EmpID

Employees Table

Employees Allocation Table

SQL CREATE Table <Employees> SELECT RATE FROM TABLE=< > WHERE EMPID=< >

Normalized Indexes Joins

The Fundamental – Program & Apps

Source Code Program Sal Print ‘Enter your name and hourly rate’ Read Char Name Read Int Rate Print ‘Hello ’, Name, ‘your salary is: ’, Rate*160 end

Binary code

01010101010101 11110101010001 10000101000101 10001010101010 10100111111010 11110100100000 11111100000000 11010010101010 10000000000111 11110010101011 11110010000000

Compilation

Libraries

Open Source

DataBase (SQL)

O/S

Graphics

Executable

01010101010101 11110101010001 10000101000101 10001010101010 10100111111010 11110100100000 11111100000000 11010010101010 10000000000111 11110010101011 11110010000000 10001010101010 10001010101010 11111001110111 01111101110100 11111111111011 linking

The Fundamentals - Environments

Developer Area Development Unitest TEAM Area Configuration Version Control System Test QA Team System Test Regression test Performance Test User UAT User Acceptance test User PRODUCTION HA & DR Backup

Salary

מעקב שעות

Salary

Work hour report

מעקב שעות

המלאיניהול

Salary

Work hour report

inventory

הנהלת חשבונות

מעקב שעות

המלאיניהול

לניהול ומעקב הלקוחות

Salary

Work hour report

inventory accounting

הנהלת חשבונות

מעקב שעות

המלאיניהול

לניהול ומעקב הלקוחות

Salary

Work hour report

inventory הנהלת חשבונות

Customers managemnt

הנהלת חשבונות

מעקב שעות

המלאיניהול

לניהול ומעקב הלקוחות

Salary

Work hour report

inventory הנהלת חשבונות

Customers managemnt

http://www.google.co.il/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=AA-UPL6noZeKAM&tbnid=iMUTrGF6XLOnoM:&ved=0CAUQjRw&url=http://www.angelinacynthia.com/2012/09/06/from-kuala-lumpur-to-genting-highlands/&ei=cuXUUqTiI6an0wXSx4GwBw&bvm=bv.59378465,d.ZG4&psig=AFQjCNGQi2ktCFPtKRuAWxGlHp84Qzq2bA&ust=1389770473045424

• KISS

• RTFM

• Go for the NIH

• The ‘Out of the Box’ method

• Use Clouds, Service Bureau

• Trust the people you trust

– Lawyer, CPA, Mom&Dad

• Hire Expert(s)

• Friends, Family & Partners

http://www.google.co.il/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=_a-fcEgDqYuCVM&tbnid=DKGrOEKhdMaQ_M:&ved=0CAUQjRw&url=http://www.cannonconfidential.co.uk/Large-Corporate&ei=KO_UUpu6LKeY1AXiqIHgDw&psig=AFQjCNEvLtJvPYua7975OBFI5sKFhvchXg&ust=1389772953349118

The Org Charts Of All The Major Tech Companies (Humor)

: http://www.businessinsider.com/big-tech-org-charts-2011-6#ixzz2qMENzlku

email

telephony

website

Productivity tools (MS-Office

network

PCs

http://www.google.co.il/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=6fPHvZ-6DKu8XM&tbnid=bPvUXSl5rvI-LM:&ved=0CAUQjRw&url=http://www.jamasoftware.com/blog/the-five-dimensions-of-a-software-project-part-2/&ei=RPDUUrqXMuiy0QWo34Ao&psig=AFQjCNHFilb1gDaFeRQijOpWnoZiQ48ffQ&ust=1389773169355640

http://www.google.co.il/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=3-pqKPjOIddt2M&tbnid=9z_oKkmzYjQ1kM:&ved=0CAUQjRw&url=http://www.businessbee.com/resources/news/operations-buzz/career-advice-from-25-of-your-favorite-tv-characters/&ei=tB_VUv3-J-e90QWkioDQCQ&bvm=bv.59378465,d.bGQ&psig=AFQjCNH2PMjItNzx9P2QQPzKfidEHUKD2Q&ust=1389785357261261

• Usually not your CORE business

• Essential, Critical element of the organization

• Technological, Complex, Sensitive

• Develops and changes at the fastest Rate

• Becomes more and more Strategic

• CAN MAKE A DIFFERENCE !