: Most available units are Certified Refurbished , meaning they have been tested and repaired to meet original factory specifications.
: $139.99 $299.99
: $199.99 $429.99 Pre-Owned PlayStation 4 (500GB) : Approximately $149.99 Availability and Purchasing Options
While Best Buy provides a warranty through its refurbishment program, you may find lower prices through private sellers. For context, general market "loose" prices (console only) often range from $75 to $150 depending on the model. PS4 Console - PlayStation - Best Buy
At , a PlayStation 4 typically costs between $139.99 and $199.99 for refurbished or pre-owned models as of April 2026. Since the PS4 is a legacy console, "brand new" units are rarely in stock, and the inventory primarily consists of Geek Squad Certified Refurbished systems. Console Pricing at Best Buy
: Best Buy often offers monthly payment plans for these consoles, such as approximately $27.67/month for a standard PS4 or $37.42/month for a Slim model, depending on the current credit offers. Comparison with Market Value
: Rare new units, such as the PlayStation 4 Slim 1TB Core Console , may occasionally be listed for around $449.00, though these are often "Sold Out" or available through third-party marketplace sellers on the site.
This LMC simulator is based on the Little Man Computer (LMC) model of a computer, created by Dr. Stuart Madnick in 1965. LMC is generally used for educational purposes as it models a simple Von Neumann architecture computer which has all of the basic features of a modern computer. It is programmed using assembly code. You can find out more about this model on this wikipedia page.
You can read more about this LMC simulator on 101Computing.net.
Note that in the following table “xx” refers to a memory address (aka mailbox) in the RAM. The online LMC simulator has 100 different mailboxes in the RAM ranging from 00 to 99.
| Mnemonic | Name | Description | Op Code |
| INP | INPUT | Retrieve user input and stores it in the accumulator. | 901 |
| OUT | OUTPUT | Output the value stored in the accumulator. | 902 |
| LDA | LOAD | Load the Accumulator with the contents of the memory address given. | 5xx |
| STA | STORE | Store the value in the Accumulator in the memory address given. | 3xx |
| ADD | ADD | Add the contents of the memory address to the Accumulator | 1xx |
| SUB | SUBTRACT | Subtract the contents of the memory address from the Accumulator | 2xx |
| BRP | BRANCH IF POSITIVE | Branch/Jump to the address given if the Accumulator is zero or positive. | 8xx |
| BRZ | BRANCH IF ZERO | Branch/Jump to the address given if the Accumulator is zero. | 7xx |
| BRA | BRANCH ALWAYS | Branch/Jump to the address given. | 6xx |
| HLT | HALT | Stop the code | 000 |
| DAT | DATA LOCATION | Used to associate a label to a free memory address. An optional value can also be used to be stored at the memory address. |