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2 years ago

What company built its first computer from a wooden box

Computers and Technology

2 answers:

Blizzard [7]2 years ago

7 0

Apple built the Apple 1 in 1976. The personal computer had a circuit board that was placed into a wooden box, to become the first computer built by Steve Jobs and Steve Wozniak. This was the company’s first personal computer.

tatyana61 [14]2 years ago

6 0

Answer:

Apple Computers

Explanation:

In 1976 Apple was founded, with partners Steve Jobs (still active today) and Steve Wozniak, who, while not as well-known as the partner, did almost all the hard work of development. A curiosity is that Apple was only founded because the Apple I project (developed by the two in their spare time) was rejected by Atari and HP.

The Apple I was sold already assembled. The board was sold “naked”, mounted on a wooden board and packed in a cardboard box, so it was common for Apple I to be installed inside handcrafted wooden boxes.

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1. PLCs were originally designed as replacements for: a) microcomputers. c) analog controllers. b) relay control panels. d) digi

timama [110]

Answer:

PLCs (Programmable logic controller) were original designed as replacement for relay control panels. Relay is another word for a switch. Relay control panels were made for the control of electronic instrumentents or devices. Later on PLCs were made to replace these timers and relay control panels. PLCs are more reliable, flexible and can work better in the harsh environmental situations then the relay control panels.

3 0

2 years ago

What is the distance rn between the point of application of n⃗ and the axis of rotation? what is the distance rw between the poi

Mandarinka [93]

Complete Question.

A. Suppose that you are holding a pencil balanced on its point. If you release the pencil and it begins to fall, what will be the angular acceleration when it has an angle of 10.0 degrees from the vertical?

B. What is the distance rn between the point of application of n⃗ and the axis of rotation?

C. What is the distance rw between the point of application of w⃗ and the axis? enter your answers in meters separated by a comma?

Answer:

A. â = - 17rad/s²

B. rn = 0, meters

C. rw = 0.074, meters

Explanation:

Where;

l = length of the pencil

θ = angle between the vertical line and the pencil

â = angular acceleration.

The torque due to weight about the pivotal point is negative since it's clockwise;

t = - mg(l/2)sinØ ..... equation 1

torque with respect to angular acceleration;

t = Iâ ..... equation 2

The moment of Inertia of the pencil about one end;

I = (ml²)/3

Substituting I into equation 2;

t = [(ml²)/3]×â

Equating the equation, we have;

[(ml²)/3]×â = - mg(l/2)sinØ

â = (-3gsinØ)/2l

â = (-3*9.8*sin10°)/(2*0.15)

Angular acceleration, â = -17rad/s²

B. The normal force is acting at the normal force only, so the distance r n between the point of application of n ⃗ and the axis of rotation is zero because the axis of pencil is passing the same point of application w.

C. rn = (lcosØ)/2

rn = (0.15 * cos10°)/2

rn = (0.15 * 0.9848)/2

rn = (0.1477)/2

rn = 0.074m.

Since the gravity acts at exactly half of the length of pencil, distance r w between the point of application of w⃗ and the axis equals 0.074m.

8 0

2 years ago

After experiencing several issues with an Active Directory domain controller, you have decided to perform a restore operation on

Vikentia [17]

Normally active directory once is corrupted best method is to repair the active directory. As IT administrator user has keep a proper backup either date wise or weekly wise.

Explanation:

If IT administrator doesn’t have enough backup restore or repairing the active directory is highly impossible.

Before restore proper information to be made and rebooted the domino server and selected advance boot option and select the restore options. And select the proper and good backup and restore it. After restoring the backup domain server started and domain active directory should work proper.

As experience better to reinstall domain server and active directory is good practice.

5 0

2 years ago

Suppose Host A sends two TCP segments back to back to Host B over a TCP connection. The first segment has sequence number 90; th

Anna71 [15]

Answer:

a) Consider sequence numbers,First segment=90

Second segment=110

Data in the first segment = 110-90 =20

b) Consider the first segment is lost but the second segment arrives at B. In the acknowledgment that Host B sends to Host A, then the acknowledgment number will be first segment of sequence number, that is 90.

Explanation:

8 0

2 years ago

Read 2 more answers

Which formula would you enter into C3, and then AutoFill into C4 through C6, to calculate the percent sales (Pct.) for the regio

inna [77]

Answer:

In C3, you would enter the formula:

=B3/$B$7%

Explanation:

Let's assume the first row is 1 and it contains the titles of the columns. For instance, the content of the cellss A1:C1 could be:

A1: Region

B1: Sales

C1: Percent Sales

Also, assume the second row is empty and the cells on the first column, A, contain the names of four regions. For instance, North, South, East, and West:

A3: North

A4: South

A5: East

A6: West

The cells B3:B6 contain the sales for the four regions. For instance:

B3: 200

B4: 300

B5: 100

B6: 400

Then, you must calculate the percent sales for every region, in the cells C3:C6.

That means, you must divide the sale of every region by the total of sales and multiply by 100.

To do that in the worksheet you do this:

1. Sum the sales for the regions:

In cell B7 introduce: =SUM(B3:B6)

2. Calculate the percent sale for the first region:

In cell C3 introduce: =B3/$B$7%

That means that the reference B3 is relative: when you copy that formula, the column (B) and the row (3) will change accordingly to the cell where you will copy it.

Thus, by using the Autofill into C4 through C6, the column wil remain unchanged (C) and the row will change to 4, 5, and 6, respectively.

The symbol $ used in $B$7 make the reference absolute. That means that they will not change. The symbol % makes that the result is multiplied by 100.

3. When you use Autofull into C4 through C6, you obtain:

C4: =B4/$B$7%

C5: =B5/$B$7%

C6: =B6/$B$7%

4 0

2 years ago